user_query: create a list called to do and add go to mall, buy foods to the list
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
user_query: yes
response_text: Sure, I made a list called "To-Do" and added those two things.
User: I want salad, no pasta from Meijer.
Parse: Get_product ( product « pasta » product_source « Meijer » )