AI-Driven Digital Gold Backend

I need a Python-based service that marries an LLM-powered chat assistant with a rock-solid transaction engine for buying digital gold. The chat’s first job is to guide users toward completing a purchase; answering their questions about gold comes second... (Budget: ₹600 - ₹1500 INR, Jobs: API Development, Data Management, Django, Docker, FastAPI, Flask, Git, Payment Gateway Integration, Python, Software Architecture)