Build USSD Application Using Hubtel USSD API

The application is a restaurant food ordering system. 1. Client first registers with us with just first name, last names and location 2. Client selects restaurants registered with us 3. Selects the menu 4. Selects the size of the menu against the price (Option to add more menu) 5. Enters quantity of the menus 6. Selects either pickup or delivery 7. If delivery, enters his location or use default location on registration to get price 8. Clients is prompted with mobile money for payment 9. Client receives e-receipt via sms for confirmation. I would need to explain further if need be