user_query: text Luna
response_text: OK, what's the message?
user_query: Get more cereal 
response_text: Sorry, I'm not finding a match in your contacts. Tell me just the first name ? or feel free to use the screen.
user_query: Send message to Luna
response_text: Sorry,, who do you wanna message?
User: How much How much was my Visa bill last week.
Parse: Get_bill ( billing_date_span « last week » card_company « Visa » )