user_query: Could you create a list for me named Costco
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
user_query: Add pears and bananas to it
response_text: Alright, I added pears and bananas.
user_query: frozen berries
response_text: Alright, I made a list called "Frozen Berries".
User: Put new items on my packing list
Parse: Add_item_to_list ( list_label « packing » list_singular_or_plural « list » )