You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I amend you?

USER: I am Patrick Hill.

ASSISTANT: Ok.

USER: I would like to exhibit my arts at National gallery of art at Washington, can you book me a ticket to IAD?

ASSISTANT: Sure, from where you want to start your journey?

USER: I would like to start from AUS.

ASSISTANT: Please provide your trip dates?

USER: My preferable journey dates are 05/19 and 05/21.

ASSISTANT: There is a flight from an AA Airline of fare 100 and flight number 1025. Shall I confirm?

USER: Please reserve it for me.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.