You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Kathleen Brown here. Can you please book me a ticket from PHX to AUS?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok. I would like to travel on 01/31 and 02/02.

ASSISTANT: I am sorry, there are no flights available with your preferable dates.

USER: No issues, thank you for the help.

ASSISTANT: Thank you, have a good day.