You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best serve you today?

USER: I am looking for a flight from AUS to PHX, can you help me in booking?

ASSISTANT: When would you like me to book a ticket?

USER: My planned travel dates are Apr 17 and Apr 19.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any connection limit for you?

USER: Yes, please look for a connecting flight.

ASSISTANT: May I know your name please?

USER: Myself Eric Martin.

ASSISTANT: Any other specifications required for your journey?

USER: I would like to start my journey for the afternoon flight.

ASSISTANT: Sorry Eric Martin, based on your requirements we haven't found any flights in airline database.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thanks for approaching us.