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

ASSISTANT: Hello, how may I help you?

USER: I would like to go to Lady Bird Lake in Austin, so could you please book a ticket for me?

ASSISTANT: Please send me your travelling dates. Can I have your nearby airport codes?

USER: I would like to go on 02/10 and return back on 02/12.

ASSISTANT: Ok.

USER: My source and destination airport codes are DEN and AUS.

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a flight available with Delta airlines, shall I book your ticket?

USER: Ok, please proceed for further. If it costs you below 500.

ASSISTANT: Your booking is done with flight number 1002. Happy journey.

USER: Welcome.

ASSISTANT: Thank you for reaching us.