user_query: add barbie doll to christmas list
response_text: Got it, I added barbie doll.
user_query: actually cancel that
response_text: Are you sure you want to go ahead and delete it?
user_query: yes
response_text: OK, I deleted the list called "christmas."
User: Please order 2 large pizzas and bread from Hungry Howies, actually no order it from Jet's instead.
Parse: Order_menu_item ( menu_item « large pizzas » menu_item « bread » quantity MenuItemQuantity ( amount « 2 » ) restaurant « Jet's » )