27. 📞 Voice Chat-to-Order

Overview

Voice-enabled AI interface that allows customers to place orders by speaking naturally over phone or web; integrates with order management systems.

Primary Use Cases

• Restaurants enabling contactless phone orders
• Retailers offering voice checkout on websites
• Call centers automating order entry

Key Features

• Speech-to-text via Whisper
• Intent & entity extraction for product, quantity, modifiers
• Order confirmation dialog
• Integration with backend OMS or inventory service

Tech Stack

• Frontend: React + TypeScript (web widget)
• Backend: FastAPI (Python) + Go service for telephony integration (Twilio)
• AI Models: Whisper for ASR; bert-base-uncased fine-tuned for intent detection
• Database: PostgreSQL for order logs

Architecture

1. Voice Channel: capture audio stream → send to ASR
2. NLU Service: parse transcript into structured order