user_query: stop eating my mothers food 
response_text: I got: Stop eating my mothers food.. Ready to send it?
user_query: jack
response_text: Sure, what's the message?
user_query: message someone
response_text: Who do you wanna message?
User: Purchase tickets to the Backstreet Boys concert.
Parse: BuyEventTickets ( event_performer « Backstreet Boys » )