user_query: add an item to a list
response_text: OK. Which list do you want to add to?
user_query: hiking
response_text: What do you want to add?
user_query: nevermind add an item to my swimming list
response_text: What do you want to add?
User: Can you have an Uber pick me up at home, I mean at work?
Parse: Order_ride ( pickup_location « work » provider « Uber » )