user_query: actually call 555-666-1111
response_text: Calling (555) 666-1111.
user_query: call number 555-555-1111
response_text: Calling (555) 555-1111.
User: Let's purchase some concert tickets on Ticketmaster, I mean Stubhub.
Parse: BuyEventTickets ( event_type « concert » provider « Stubhub » )