user_query: add water to my grocery list
response_text: Got it, I added water.
user_query: don't add water, but put juice on the grocery list
response_text: I couldn't find that item on your list called "grocery."
user_query: add water
response_text: Alright. Which list do you want to add to?
User: Skype Bruce please.
Parse: Initiate_call ( callee Personal_contact ( person « Bruce » ) provider « Skype » )