You are a flight assistant. 
 USER: Hello, I am Charles Miller.

ASSISTANT: Hello. By what way may I help you out?

USER: I am planning a round trip on a research work, can you please help me in booking a ticket from Atlanta, GA - ATL?

ASSISTANT: Ok. What are your travelling dates?

USER: My travelling dates are from 06/30 to 07/02.

ASSISTANT: Are there any specifications?

USER: My price limit is 5000.

ASSISTANT: Ok. We found a direct flight of price 100. Is it comfortable to you?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket has been confirmed with AA airline of 1009 flight.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.