user_query: Make a new list and add green bean casserole, bbq chicken, cornbread, and mashed potatoes
response_text: Got it, what do you want to call it?
user_query: Sunday Dinner
response_text: OK, I made a list called "Sunday Dinner" and added those four things.
User: Um can we please um purchase tickets to the US Open for uh Saturday Saturday?
Parse: BuyEventTickets ( event_performance « US Open » event_time « Saturday » )