You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carolyn from Houston.

ASSISTANT: How can I help you?

USER: Can you please help me in flight ticket booking from HOU to DCA to attend a business meeting?

ASSISTANT: May I know your desired travel dates please?

USER: I would like to airborne on 03/20 and recur back on 03/22.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: May I know your full name please?

USER: Sure, my name is Carolyn Garcia.

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

USER: No problem with that one, I can reach my location with any other source. Thank you for your help.

ASSISTANT: Thank you for opting us.