user_query: check playoff tree on sports list
response_text: Which list?
user_query: check it off
response_text: Which list?
user_query: sports
response_text: OK, I added playoff tree.
user_query: add playoff tree to my list
response_text: OK. Which list do you want to add to?
User: Have Uber pick me up at home, no, at Mark's house.
Parse: Order_ride ( pickup_location « Mark's house » provider « Uber » )