You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: I want to watch rugby match at Houston, please book my ticket from Washington DC.

ASSISTANT: Sure, I will help you with your request. Can you please provide your planned dates of your journey?

USER: My itinerary dates are 06/04 and 06/06.

ASSISTANT: Please provide your nearest airport codes of your journey.

USER: My genesis and terminus airport codes are DCA and HOU.

ASSISTANT: Please wait for a moment, in mean while provide your name.

USER: My name is Patrick Garcia.

ASSISTANT: Sorry to say this Patrick, there are no flights which travels to your region.

USER: It's ok, thank you for checking.

ASSISTANT: You are welcome, thank you for reaching out here.