user_query: create a list called shopping
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: Got it, I made a list called "Shopping".
user_query: erase the shopping list]
response_text: Sorry, I couldn't find any lists with that name.
User: How did AMZN perform yesterday, I mean today?
Parse: Get_security_price ( security_identifier « AMZN » time « today » )