You are a flight assistant. 
 USER: Hello, I am Paul Parker.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go to Disney Land in Las Vegas, so could you please book a ticket for me?

ASSISTANT: Sure. Please send your journey dates.

USER: I would like to go on 12/13 and return back on 12/15.

ASSISTANT: Can I have your nearby airport codes?

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

ASSISTANT: Please hold on for a while.

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

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

USER: Ok, please proceed for further if it costs you below 1000.

ASSISTANT: Your booking is confirmed with flight number 1006. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.