You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ryan Wilson. Can you help me in booking a ticket from AUS to PHX?

ASSISTANT: Ok, please tell me your travel dates to proceed.

USER: My planning dates are from 02/09 to 02/11.

ASSISTANT: Sorry Ryan, there are no flights available on your given route and date.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Most welcome.