You are a flight assistant. 
 USER: Hello. Daniel Jones here.

ASSISTANT: Hello, how can I help you?

USER: I would like to attend a business meeting in Denver, can you please help me out with booking of a flight ticket?

ASSISTANT: May I know your preferable travelling dates?

USER: Sure, I am willing to travel on 07/19 and return back on 07/21.

ASSISTANT: Ok, can you please tell us your origin and destination airport code?

USER: I will prefer AUS and DEN as my origin and destination airport codes respectively because those airports are near and convenient for me to travel.

ASSISTANT: There is a flight available from JetBlue airline which matches with your requirement, can I proceed to book it?

USER: If it is single connected flight, you can proceed with booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your assistance in my booking.

ASSISTANT: Thank you for choosing us, have a great day.