user_query: I need to start a list of Subjects to Study
response_text: Alright, I made a list called "Study".
user_query: Remove the Study list.
response_text: Are you sure you want to go ahead and delete it?
user_query: Yes.
response_text: OK, I deleted the list called "Study."
user_query: Let's make a list of Calls to Make
response_text: Calling voicemail.
user_query: Make a new list of Calls to Make
response_text: Calling voicemail.
User: How did tesla perform last month?
Parse: Get_security_price ( security_identifier « tesla » time « last month » )