You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you aid me in booking a flight ticket from PHL to AUS?

ASSISTANT: Sure, let me know your trip dates please?

USER: Sure, I would like to go on July 25th and return back on July 27th.

ASSISTANT: May I know your connection limit?

USER: Ensure it is a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: Ensure the depart time is in the morning.

ASSISTANT: Can I know your name please?

USER: Myself Sandra Harris.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for contacting us, have a nice day.