WhatsApp Order Bot with GPT

I need a WhatsApp-based chat-bot that connects to ChatGPT and takes over the entire order-processing flow for my store. The bot must automatically:

• collect and validate product information
• capture payment details securely
• record the customer’s contact information

End-to-end, the conversation should feel natural thanks to ChatGPT, yet every step must translate into structured data I can push into my existing back-office. Think of a user messaging “I want two blue hoodies”; the bot confirms stock, calculates totals, asks for payment, issues a receipt, and stores name, phone, and address—without any manual touch.

Please build on the official WhatsApp Business API (Twilio, Meta Cloud API, or similar) and wire it to the ChatGPT API. A lightweight admin panel or webhook endpoint where I can see raw order objects is enough; no full CRM needed.

Deliverables:
1. Source code (Node.js or Python) and README for local deployment.
2. Cloud-hosted instance running in my account.
3. Short video or live demo showing a complete order cycle.

If you have prior WhatsApp automation or GPT integration samples, share a link in your proposal so I can assess fit quickly.