user_query: no, change it for Thursday
response_text: At what time?
user_query: meeting
response_text: Got it, Meeting on Wednesday at 10:00 PM. Do you want to save that?
user_query: ten 
response_text: What's the title of the event?
user_query: add meeting at Wednesday
response_text: At what time?
user_query: make a note work
response_text: Saved your note
User: I don't need that Lyft today at 3 pm, err, I mean at 4 pm after all.
Parse: Cancel_ride ( pickup_time « 4 pm » provider « Lyft » )