user_query: add potatoes to my list
response_text: Alright, I added potatoes.
user_query: I want to view my shopping list
response_text: You have two things on that list.
user_query: bring up my shopping list
response_text: You have two things on that list.
User: Purchase 2 tickets for the Luke Bryan show in Jacksonville Florida.
Parse: BuyEventTickets ( event_location « Jacksonville Florida » event_performer « Luke Bryan » ticket_quantity « 2 » )