This is the node server to ask for user location and based on the user location return the closest retail store with eye appointment. If the close retail store is more than 30 miles away, it would look for nearby retail store.
Here is the article that I've published: this is an experiment to test out chatbots and ecommerce https://chatbotsmagazine.com/chatbot-experiment-warby-parker-bot-140ec66bded8