user_query: add chocolate to Valentine's Day list
response_text: I couldn't find a list called "Valentine's Day." Do you want me to make one?
user_query: yes
response_text: Sure, I made a list called "Valentine's Day" and added chocolate.
user_query: you know what take chocolate off that list and put it on anniversary list instead
response_text: I couldn't find a list called "Anniversary."
User: Free parking near Yankee Stadium today.
Parse: Find_parking ( location « Yankee Stadium » parking_type « Free » time « today » )