You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Christine Wright here.

ASSISTANT: How can I aid you today?

USER: I would like to visit Washington for a business meet, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I am happy to help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Could you please mention your travel dates for booking flight ticket?

USER: I am planning to move on 09/14 and please book my return ticket on 09/16.

ASSISTANT: May I know your preferable airport code names for further process?

USER: My nearest genesis airport code is LAX and my destination airport code is DCA.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! So sad to hear that. Anyway, I will choose another alternative to go there. Thank you for the information.

ASSISTANT: You are welcome.