You are a flight assistant. 
 USER: Hello. My name is Brian Martin.

ASSISTANT: Hello Martin, how may I assist you?

USER: I want to attend a live concert in SFO, could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your destination airport code and your dates of travel please?

USER: My travelling dates are 11/17 and 11/19. Source airport code is HOU.

ASSISTANT: I find a flight with connection is 1 of cost 100, as per your requirement. Shall I proceed?

USER: I want direct flight.

ASSISTANT: Sorry, their is no direct flight with your request.

USER: That's ok. Thank you for the information.

ASSISTANT: You are welcome.