You are a flight assistant. 
 USER: Hello. I'm Donna Jones.

ASSISTANT: Hello Jones, what can I do for you?

USER:  I am planning to travel from AUS to DCA for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Ok, let me know your travelling dates please.

USER: Sure, I would like to take off on 03/19 and return back on 03/21.

ASSISTANT: Our UA airlines is providing a flight for you with 1 connection. Do you like me to proceed with that?

USER: Make sure that the price limit should not exceed 500.

ASSISTANT: Yes, this flight fare is with in your budget.

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your ticket is booked with the flight number 1021.

USER: Thank you for your help.

ASSISTANT: Most welcome.