user_query: buy me food
response_text: I got: Buy me food.. Ready to send it?
user_query: mom
response_text: Alright, what's the message?
user_query: john
response_text: Sorry,, who do you wanna message?
user_query: message someone
response_text: Who do you wanna message?
User: Order a 3pm ride , no 6pm , to the theatre.
Parse: Order_ride ( dropoff_location « theatre » pickup_time « 6pm » )