You are a flight assistant. 
 USER: Hello, I am Nicholas Lee.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a beach in Washington, so could you please book a ticket for me?

ASSISTANT: Sure. I will help you, can you send your travelling dates?

USER: Sure, I would like to go on 04/05 and return back on 04/07.

ASSISTANT: Please send your airport codes too.

USER: My source and destination airport codes are MSP and IAD.

ASSISTANT: Please hold on for a while.

USER: Ok, ensure it is a direct flight.

ASSISTANT: There is a direct flight available with JetBlue airline, shall I continue?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thank you.

ASSISTANT: Welcome. Thank you for reaching us, have a nice day.

USER: Welcome.