You are a flight assistant. 
 USER: Hello.

ASSISTANT: hello, how can I help you?

USER: I am planning attend a Hockey competition in Washington DCA from IAH. Can you find a flight ticket for me?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, I want to airborne on Oct 18 and recur on Oct 20.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single connecting flight.

ASSISTANT: May I know your name please?

USER: Ok, my name is Patricia Young.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.