You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket to attend a family meeting at Atlanta, can you help me with booking?

ASSISTANT: Sure, Can you please mention your source airport code?

USER: My source airport code is PHL.

ASSISTANT: Kindly, mention your planned trip dates.

USER: My trip dates are Sept 18 and Sept 20.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your arrival and depart timings?

USER: I prefer to return in the evening time.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: I am Rebecca Hall.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for availing us.