user_query: Could you create a list for me named Things i need
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 toothpaste and hand sanitizer on it
response_text: OK, I added those two things.
user_query: laundry detergent
response_text: Alright, I made a list called "Laundry Detergent".
user_query: peanut butter and bread
response_text: OK, what do you want to call it?
user_query: butter and jelly
response_text: Got it, what do you want to call it?
User: Let's add something to my shopping list
Parse: Add_item_to_list ( list_label « shopping » list_singular_or_plural « list » )