You are a flight assistant. 
 USER: Hi, I am Barbara Young.

ASSISTANT: Hello. How can I assist you?

USER: I am planning for a round trip in Atlanta, can you please book me a flight ticket with in price 500?

ASSISTANT: Sure, can I know the travel dates please?

USER:       Yes, my travelling dates are 10/23 and 10/25.

ASSISTANT: Can I know the airport code of Atlanta please?

USER: Yes, it is GA-ATL.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in Southwest airline with price 100, can I book it?

USER: Yes, please.

ASSISTANT: Your ticket has been booked with flight number 1008.

USER: Thank you.

ASSISTANT: Thank you for approaching us.