You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine King.

ASSISTANT: How can I aid you?

USER: I want to travel from AUS to PHL. Can you book a flight ticket for me?

ASSISTANT: Sure, I am glad to help you in booking the flight ticket. May I know your planned travel dates?

USER: I want to travel on 09/30 and 10/02.

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

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.