user_query: tomorrow at 11 a.m.
response_text: Alright, I'll remind you on Wednesday at 11:00 AM.
user_query: Make a reminder for me to call back Sally.
response_text: Alright, call back Sally. When do you want to be reminded?
User: Order me a ride for pickup at 6, no, make that pickup at 5:30.
Parse: Order_ride ( pickup_time « 5:30 » )