You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Ashley Hall. I would like to book a ticket from AUS to PHX, Can you please help me out in booking?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, my desired dates are 07/31 and 08/02.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for opting us.