user_query: prom
response_text: OK. Which list do you want to add to?
user_query: add vest to a list
response_text: Alright. Which list do you want to add to?
User: Tell Stubhub to buy 5 tickets to Disney on Ice.
Parse: BuyEventTickets ( event_performance « Disney on Ice » provider « Stubhub » ticket_quantity « 5 » )