You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I help you out?

USER: I want to book a flight ticket on 08/16 to 08/18, could you help me in flight booking?

ASSISTANT: Sure. May I know your airport codes?

USER: Sure, I am planning to do shopping on my brother birthday in MI - DTW and my source from GA - ATL.

ASSISTANT: Do you have any specifications?

USER: I want a single connection with price 500.

ASSISTANT: Wait for a minute, mean while let me know your name.

USER: Sure, my name is Jason Nelson.

ASSISTANT: Thank you for your time. We have no flights that matches with your information.

USER: Not a problem. Thank you, for your service.