user_query: get a list going
response_text: You have eleven lists. Which one do you want to know about?
user_query: new list
response_text: You have eleven lists. Which one do you want to know about?
user_query: locations
User: Um I'd like to buy tickets to next week's Thunder game.
Parse: BuyEventTickets ( event_performer « Thunder » event_time « next week » event_type « game » )