You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Larry Lewis. I would like to book a flight ticket from AUS to LAS. Could you please help?

ASSISTANT: Sure, can I know your preferable dates?

USER: Yes, I would like to start on 09/25 and return back on 09/27.

ASSISTANT: I found a flight 1023 of Frontier airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.