user_query: Start a list.
response_text: OK, what do you want to call it?
user_query: testing
response_text: Sure, I made a list called "Testing".
user_query: add adhoc and performance
response_text: Got it. Those two things on your list called "Testing". Anything else?
user_query: testing
response_text: Alright. Testing. Anything else?
User: I need my ride to the airport, I mean bus station cancelled.
Parse: Cancel_ride ( dropoff_location « bus station » )