You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me with flight ticket booking from AUS to PHX?

ASSISTANT: Sure, can I know the travel dates please?

USER: Thank you. I have planned my travel dates as Mar 24 and Mar 26.

ASSISTANT: May I know your name please?

USER: Sure, myself Helen Taylor.

ASSISTANT: Do you have any requirements?

USER: I would like to depart in evening time so please check with that.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.