user_query: I need shoes put onn my list
response_text: Alright. Which list do you want to add to?
user_query: sports
response_text: OK, I added shoes.
user_query: switch it to the shopping list
response_text: What do you want to add?
User: put the shoes on my shopping list
Parse: Add_item_to_list ( items « shoes » list_label « shopping » list_singular_or_plural « list » )