user_query: Please add something to one of my lists
response_text: Got it. Which list do you want to add to?
user_query: Walmart
response_text: What do you want to add?
user_query: Batteries
response_text: I couldn't find a list called "Walmart." Do you want me to make one?
user_query: Yes
response_text: Alright, I made a list called "Walmart" and added Batteries.
user_query: Actually I don't mean batteries 
response_text: What do you want to call it instead?
User: Order me an Uber arriving at 3:30, no, 3:45 pm.
Parse: Order_ride ( pickup_time « 3:45 pm » provider « Uber » )