user_query: I want to make a note for 7 am
response_text: OK, what do you want it to say?
user_query: Abort note
response_text: Saved your note
User: Cancel that 2pm, no, 3pm Uber to L.A.
Parse: Cancel_ride ( dropoff_location « L.A. » pickup_time « 3pm » provider « Uber » )