You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I'm John Walker. I am planning to attend convocation meeting at Washington, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your travel dates?

USER: Sure, I would like to take off on 01/12 and return back on 01/14.

ASSISTANT: Please share your airport codes.

USER: My source airport code is SFO and the destination airport code is IAD.

ASSISTANT: The flight 1010 of Hawaiian airlines is available on your requested dates with a price of 100. Shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: John, your reservation has done successfully.

USER: I appreciate your help, thank you.

ASSISTANT: You are welcome.