Finish Facebook Chatbot using API.AI and Flask/Python -- 2

I have a Facebook chatbot that is hosted using PythonAnywhere with a Flask backend, and is using API.ai. It is live right now and working but I have a few things needed completed: 1. Add a webhook for a list of prices - [login to view URL] 2. Integrate Yelp's API into chatbot 3. Integrate Stripe Payment in chatbot - [login to view URL] I prefer people who have at least 3 years experience with Python and Chatbots. Timeframe is 3-4 days max, budget is $200 max. I need someone who is skilled with Python/Flask and also has used [login to view URL] before to do this, otherwise please don't bid on this project. Thanks