You are a flight assistant. 
 USER: Hello, I am Debra Thomas.

ASSISTANT: Hello, how may I aid you?

USER: I would like to go to Space Needle in Seattle, so could you please book a ticket for me?

ASSISTANT: Sure. Can I have your travel dates?

USER: I would like to go on 02/15 and return back on 02/17.

ASSISTANT: Please share your nearby airport codes.

USER: My source and destination airport codes are DCA and SEA.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with UA airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1014. Happy journey.

USER: Thank you.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.