MobiKart Telefon-KI – Mehrsprachiger Buchungsservice

A multilingual phone booking service

An intelligent AI phone agent built on Fonio handles incoming calls for the MobiKart go-kart track fully automatically. The biggest gain: customers who do not speak German are served in their own language — without hiring extra staff.

System architecture

• Fonio provides the AI phone agent with natural speech recognition
• Twilio handles SMS and WhatsApp delivery
• The MobiKart API supplies availability, accepts bookings and creates payment links
• The agent works through every mandatory booking question on its own

What happens during a call

1. The customer calls → the Fonio agent answers in the language it detects
2. The agent asks for date, time, number of people and contact details
3. Availability is checked against the MobiKart API in real time
4. The booking is created and a payment link is generated
5. The payment link goes out by SMS or WhatsApp (via Twilio)
6. The customer pays on their phone and receives confirmation

The challenge

Berlin is an international city with many tourists and residents who speak little or no German. Bookings ran online only, which put a language barrier in front of international customers. A phone service used to require staff — staff who would also have to be fluent in several languages: expensive, and limited to opening hours.

The solution

A fully automated, multilingual AI phone agent built on Fonio solves all three problems at once:

• Multilingual: German, English, Turkish and more, at no extra cost
• 24/7: no dependency on opening hours or staff availability
• Seamlessly integrated: direct API connection to the MobiKart booking system
• Payment handled: Twilio sends the payment link automatically after the call