user_query: Put Coca-Cola on my shopping list
response_text: What do you want to add?
user_query: I want to add to a list
response_text: Alright. Which list do you want to add to?
User: Coca-Cola
Parse: Add_item_to_list ( items « Coca-Cola » list_label InferFromContext list_singular_or_plural InferFromContext )