You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am George King.

ASSISTANT: How can I aid you?

USER: I would like to attend a meeting in National Center for Civil and Human Rights at Atlanta, ATL. Can you please book a flight ticket with connecting flight?

ASSISTANT: Sure. When would you like to travel?

USER: I would like to start my journey on 12/15 and need to catch return flight on 12/17.

ASSISTANT: Where would you like to start from?

USER: I would like to start from Philadelphia, PHL.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: We found a Delta airline, flight number:1015 and the price is 200.

USER: Ok, proceed to  booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for the help.

ASSISTANT: Thank you.