You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: My name is Donna Anderson.

ASSISTANT: Donna, how can I be a help for you?

USER: I would like to visit my brother and come back, could you help me in booking a round trip?

ASSISTANT: Yes, I can help you in booking your ticket. Could you please tell me your airport codes?

USER: My source and destination are same, which is Atlanta ATL.

ASSISTANT: Ok Donna, may I know on which dates are you interested to travel?

USER: My preferable dates are from 12/02 to 12/04.

ASSISTANT: There is a flight 1000 available with 1 connection at price 100, may I confirm your ticket with AA airlines?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you, have a safe flight.