user_query: Add milk and eggs to a new list
response_text: Got it, what do you want to call it?
user_query: paulty
response_text: Alright, I made a list called "Poultry" and added those two things.
user_query: paper
response_text: What do you want to add?
user_query: paper
response_text: Got it. Paper on your list called "Poultry". Anything else?
user_query: no
response_text: OK, your list is updated.
User: Can you add towels to the list with bananas on it?
Parse: Add_item_to_list ( items « towels » list_items « bananas » list_singular_or_plural « list » )