WhatsApp Order-Booking Bot Creation

I need a fully-functional WhatsApp agent that can guide customers through placing an order or making a booking without any manual intervention from my side. The flow should welcome the user, present the available items or time slots, collect their choices, confirm the details, and then forward the complete order or booking information to me in real time—email, webhook, or a simple dashboard are all acceptable as long as the data arrives reliably.

Key expectations
• Runs on the official WhatsApp Business API (or a reliable provider such as Twilio) so the solution stays compliant and scalable.
• Clear, conversational message flows that can be edited later, preferably through a simple JSON file or visual interface.
• Automatic error handling and fallback to a human hand-off when the bot cannot understand a request.
• Quick setup: I would like the first working version live and testable as soon as possible.

Deliverables
1. Deployable source code or cloud-hosted project.
2. Step-by-step deployment guide.
3. Short video or live demo that proves the ordering / booking journey works end-to-end.

When you respond, include a detailed project proposal that outlines the tech stack, timeline, and any previous experience with WhatsApp Business API integrations.