You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am looking to book a flight ticket from PHL to ATL. Can you help me for that?

ASSISTANT: Sure, please share your trip dates.

USER: My travelling dates are Feb 16 and Feb 18.

ASSISTANT: May I know your connection limit?

USER: I prefer to book a single connecting flight.

ASSISTANT: Which class do you prefer?

USER: Any class is fine foe me.

ASSISTANT: May I know your name?

USER: My name is Donald Martin.

ASSISTANT: Please wait for a while.

USER: Make sure that my return flight time should be in morning session.

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: Sorry Donald Martin, no flight is available from Atlanta in the morning.

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

ASSISTANT: Thank you for choosing us.