Channel K02 · 2026
AI Voice Receptionist
Live demo · built on my own initiative
Answers the phone in Dutch, answers questions and books appointments.
Try live (in Dutch)
In short
- Built for
- Trade businesses that get a lot of calls (demo for a plumber)
- The problem
- A missed call outside office hours is often a missed customer
- What it delivers
- A Dutch conversation that answers questions and books an appointment. Try it live.
Overview
An AI receptionist that answers the phone, answers questions and books appointments, entirely in Dutch. Built as a demo for a plumbing company in Gelderland: the caller asks about rates or the service area, and the receptionist checks which times are free and books the appointment straight away. An SMS confirmation is not yet part of the demo.
Challenge
Small businesses miss calls outside office hours. A permanent receptionist is expensive, and voicemail converts poorly. The customer wants an answer now, not a call-back note tomorrow.
What it does
- 01Pick up
The receptionist picks up and holds the whole conversation in Dutch
- 02Answer questions
Rates, service area and opening hours come from the business's own information
- 03Check the diary
During the call, the receptionist checks which times are still free
- 04Book it in
The appointment goes straight into the diary; an SMS confirmation is not yet connected in the demo
Result
- A fully Dutch conversation, from greeting to appointment
- Questions and diary in one call: the appointment is booked straight away
- Someone can pick up even outside office hours
- Try it live
Technology
VAPI orchestrates the voice interaction (STT → LLM → TTS), FastAPI on Render runs the tools (FAQ, availability, booking), Supabase stores appointments and n8n receives the confirmation request (the SMS step is not yet connected in the demo). All live in one phone call. Speech via Deepgram nova-2 (Dutch), GPT-4o and OpenAI TTS; 70 time slots in Supabase with a live availability check. Runs on free tiers; only the call minutes cost money.