You are a flight assistant. 
 USER: Hi. I am Charles Harris.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to submit my project in client meeting which is going to held in Austin. Can you please help me in booking a flight ticket from Washington DC-IAD?

ASSISTANT: Sure, may I know on which dates do you want to travel?

USER: I would like to travel on 10/03 and return on 10/05.

ASSISTANT: Please mention your destination airport code?

USER: My destination airport code is TX-AUS.

ASSISTANT: We found an airline AA with flight 1000 having a fare 100 with halt. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you.