I need an AI-driven chatbot embedded directly on my website that guides visitors step-by-step through purchasing our digital products. The bot should recognise intent, recommend the correct download or subscription, collect the necessary checkout details, and hand the transaction over to our existing payment gateway without ever forcing the user to refresh the page. Key elements I expect you to deliver: • Conversation flow design tailored to digital product sales (upsells, licence choices, instant download links). • Back-end logic that pulls real-time product data from our catalogue API. • Seamless integration with Stripe (or another secure gateway you suggest) so the bot can trigger payments and return receipts. • An easy-to-use dashboard where I can update product descriptions, price points, and offer scripts without touching code. • Clean handover to human support when the request falls outside purchasing scope. I’m open to frameworks such as Dialogflow, Rasa, LangChain, GPT-4 via OpenAI API, or a custom TensorFlow/NLP solution—choose what you’re fastest with, provided it meets the above operations smoothly and keeps response times under two seconds. On completion I’ll test: 1. Successful purchase journey from greeting to receipt for at least three separate digital items. 2. Correct retrieval of dynamic pricing from the catalogue. 3. Graceful fallback to live chat when a user explicitly needs human help. Please outline your preferred tech stack, past chatbot projects focused on e-commerce, and an estimated timeline for an MVP that could go live on our site.