You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kevin Lee.

ASSISTANT: How can I aid you?

USER: Can you book a flight ticket from PHL to AUS?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are from 08/31 to 09/02.

ASSISTANT: We found a UA airline, flight number:1029 and the price is 200.

USER: Ok, Proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.