user_query: I need a book list
response_text: Got it, I made a list called "Book".
user_query: I need a list of books
response_text: Sure, I made a list called "Books".
user_query: delete books
response_text: Which item?
user_query: books list
response_text: I couldn't find books on your list called "Books."
User: How is Bitcoin, I mean, Litecoin performing today?
Parse: Get_security_price ( security_identifier « Bitcoin » security_identifier « Litecoin » time « today » )