user_query: clean the toilets and floors
response_text: Sure, I added those two things.
user_query: to do list
response_text: What do you want to add?
user_query: add some items to the list
response_text: Alright. Which list do you want to add to?
User: Add lottery tickets to my list
Parse: Add_item_to_list ( items « lottery tickets » list_singular_or_plural « list » )