user_query: Text henry 
response_text: Got it, what's the message?
user_query: Send message to Henry 
response_text: Sorry,, who do you wanna message?
User: Use Ticketmaster to buy 2, no 4, tickets to Adele's concert in Las Vegas.
Parse: BuyEventTickets ( event_location « Las Vegas » event_performer « Adele » event_type « concert » provider « Ticketmaster » ticket_quantity « 4 » )