You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please assist me in booking a flight ticket to ATL from AUS?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please provide your dates of journey.

USER: My travel dates are from Nov 22 to Nov 24.

ASSISTANT: For booking we need your good name, please provide it.

USER: I am Betty Jones.

ASSISTANT: Ok, which class do you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us. Have a great day.