user_query: start a list of cat toys
response_text: Got it, I made a list called "Cat Toys".
user_query: remove cat toys
response_text: Which item?
user_query: remove cat toys list
response_text: I couldn't find cat toys on your list called "Cat Toys."
User: Find street parking near 27th street at 8:00 PM.
Parse: Find_parking ( location « 27th street » parking_type « street » time « 8:00 PM » )