AI Employees That Work 24/7
AI agents that answer your calls, book appointments, follow up with clients, and never miss a lead. Your first AI employee is a voice receptionist that works around the clock — so you never lose another customer to a missed call.
Your Phone Is Ringing. Nobody Is Answering.
Missed calls are the single biggest source of lost revenue for local businesses. The data is clear — and the cost is staggering.
37%
of business calls go unanswered
More than one-third of all calls to local businesses ring out or hit voicemail. Every unanswered call is a potential customer who moves on to a competitor.
82%
of missed calls happen during business hours
Your team is busy with in-person customers, on another line, or at lunch. The calls are not coming after hours — they are being missed while you are open.
24%
of callers leave a voicemail
Three out of four callers who reach voicemail hang up and call the next business on the list. If you are not answering, you are not even getting the chance to call back.
$10,540
lost revenue per month
At an average ticket value of $527, just 20 missed calls per month adds up to $10,540 in lost revenue. For many businesses, that is the difference between growth and stagnation.
The bottom line: Every unanswered call is a customer who called your competitor instead. You cannot follow up with a lead you never captured. Sigma Voice AI makes sure every single call is answered, handled, and converted.
Introducing Sigma Voice AI
Sigma Voice AI is your AI-powered voice receptionist — the first product under the Sigma Workforce AI brand. It answers your business phone calls with a natural, conversational voice that callers trust. It does not sound like a robot reading a script. It sounds like your best front-desk employee — the one who knows every service, every price, and every available appointment slot.
Built specifically for local businesses, Sigma Voice AI handles the entire call lifecycle: greeting the caller, answering their questions, checking your calendar, booking the appointment, sending an SMS confirmation, and following up after the service with a review request. It works 24 hours a day, 7 days a week, and it never calls in sick.
What Sigma Voice AI Does
- Natural conversational voice — callers think they are speaking with a real person
- Answers service questions using your actual business knowledge base
- Books appointments directly into your calendar system
- Sends SMS confirmations to customers after booking
- Transfers to a human team member when needed
- Available 24 hours a day, 7 days a week, 365 days a year
- Multi-language support for diverse customer bases
- California AB 2905 compliant — automatic AI disclosure on every call
Try Sigma Voice AI — Live Demo
This is a real AI receptionist answering calls for a demo medspa. Call the number below and experience it for yourself.
Call this number to speak with our AI receptionist:
(209) 921-5634This is a live AI receptionist for a demo medspa. Try asking about services, pricing, or booking an appointment. The AI will answer using real business knowledge and can book you into the calendar.
Try asking:
“What services do you offer?”
Try asking:
“How much is Botox?”
Try asking:
“Do you have availability this week?”
Try asking:
“I'd like to book an appointment”
Prefer to see the demo business online?
Visit the Demo MedSpa PageHow It Works
From the moment your phone rings to the post-service review request, Sigma Voice AI handles the entire customer lifecycle.
Customer Calls
Your AI receptionist answers instantly with a warm, professional greeting — no hold music, no voicemail, no missed calls. The customer experience starts the moment the phone rings.
AI Handles the Request
The AI answers questions about your services and pricing using your real knowledge base. It checks your calendar for availability and books appointments on the spot. No scripts — real conversation.
Booking Confirmed
The appointment is saved directly to your calendar. The customer receives an SMS confirmation with the date, time, and any preparation instructions. Your team gets notified in real time.
Follow-Up Automated
After the service is completed, the AI sends a post-service follow-up requesting a Google review. Your review count grows on autopilot, boosting your local search rankings and social proof.
Built for Every Local Industry
Sigma Voice AI is trained to handle the specific language, services, and booking workflows of your industry. Here is how it works for businesses like yours.
MedSpa & Aesthetics
Answer questions about Botox, fillers, laser treatments, and chemical peels. Book consultations and send pre-appointment instructions automatically.
Dental Offices
Schedule cleanings, handle insurance questions, and manage emergency call routing. Reduce front-desk phone burden by 60% or more.
Auto Repair & Detailing
Provide quotes for common services, schedule drop-offs, and handle parts availability questions. Capture every call while your team is under the hood.
HVAC & Plumbing
Triage emergency calls, schedule service appointments, and answer common diagnostic questions. Prioritize urgent requests and route them to on-call technicians.
Legal & Law Firms
Qualify potential clients with intake questions, schedule consultations, and provide general information about practice areas without giving legal advice.
Real Estate
Answer property inquiries, schedule showings, capture buyer and seller leads, and provide neighborhood information — all without an agent picking up the phone.
Salons & Barbershops
Book haircuts, color appointments, and grooming sessions. Handle stylist availability questions and send appointment reminders to reduce no-shows.
Healthcare Clinics
Schedule patient appointments, answer insurance and hours questions, and route urgent medical inquiries to the appropriate on-call provider.
Simple, Transparent Pricing
Every plan includes full onboarding, knowledge base setup, and calendar integration. No hidden fees. No long-term contracts.
Starter
$299/mo
For single-location businesses that need a reliable AI receptionist to handle calls during and after business hours.
- 500 minutes of AI call handling per month
- Business hours FAQ and service information
- Calendar integration and appointment booking
- SMS confirmations sent to customers
- Call recordings and transcripts
- Monthly usage reports
Pro
$599/mo
For growing businesses that need unlimited call handling, custom training, and full automation across the customer lifecycle.
- Unlimited minutes — no call caps
- Custom knowledge base trained on your business
- Multi-language support
- CRM integration (GoHighLevel, HubSpot, etc.)
- Post-service review request SMS
- Priority support and onboarding
- Advanced call analytics dashboard
- Custom call routing rules
Enterprise
$999–$2,500/mo
For multi-location operations, franchises, and businesses with complex workflows that need a fully customized AI employee.
- Multi-location support with location routing
- Custom integrations (EHR, PMS, CRM, POS)
- Dedicated account manager
- Advanced analytics and reporting
- White-label option available
- Custom voice and personality training
- SLA-backed uptime guarantee
- Quarterly strategy reviews
One-time setup fee: $1,500–$2,500 for custom knowledge base construction, calendar integration, phone number provisioning, and testing. Setup includes two weeks of refinement based on real call data.
Frequently Asked Questions
Everything business owners ask before deploying their first AI employee.
What is Sigma Voice AI?
Sigma Voice AI is an AI-powered voice receptionist that answers your business phone calls 24/7. It uses natural conversational language to greet callers, answer questions about your services and pricing, book appointments directly into your calendar, send SMS confirmations, and transfer calls to a human when needed. It is the first product under the Sigma Workforce AI brand — a suite of AI employees designed specifically for local businesses.
How does the AI know about my business?
During setup, we build a custom knowledge base for your business. This includes your services, pricing, frequently asked questions, business hours, policies, staff information, and any other details callers typically ask about. The AI uses this knowledge base to answer questions accurately and naturally. We refine it over the first two weeks based on real call data, and you can update it anytime as your business evolves.
Can it actually book appointments?
Yes. Sigma Voice AI integrates directly with your calendar system — Google Calendar, Calendly, Acuity, GoHighLevel, or your existing booking platform. When a caller wants to book, the AI checks real-time availability, offers open time slots, confirms the appointment, and sends an SMS confirmation to the customer. The appointment appears on your calendar immediately, just as if a front-desk employee had booked it.
What happens if the AI cannot answer a question?
If the AI encounters a question outside its knowledge base or detects that the caller needs human assistance, it offers to transfer the call to your team. You can configure escalation rules — for example, always transfer calls about specific topics, VIP clients, or emergency situations. If no team member is available, the AI takes a detailed message and sends it to you via SMS and email so you can follow up promptly.
Is this compliant with California regulations?
Yes. Sigma Voice AI is fully compliant with California AB 2905, which requires businesses to disclose when a caller is interacting with an AI system. Every call begins with a clear, natural disclosure that the caller is speaking with an AI assistant. We also comply with TCPA regulations for SMS messaging, including proper opt-in and opt-out mechanisms for all automated text messages sent to customers.
How long does setup take?
Most businesses are live within 5 to 10 business days. The process includes an onboarding call to gather your business information, knowledge base construction, calendar integration, phone number provisioning or porting, and testing. We run through real-world call scenarios with you before going live to make sure the AI handles your specific use cases accurately. Complex multi-location or custom integration setups may take 2 to 3 weeks.
Ready to Never Miss a Call Again?
Every missed call is a missed customer. Sigma Voice AI answers every call, books every appointment, and follows up with every client — 24 hours a day, 7 days a week. Your competitors are already losing calls. You do not have to.
No commitment required. 30-minute consultation to see if Sigma Voice AI is right for your business.