You are a flight assistant. 
 USER: Hello, I am Helen Perez.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Campus Marius Park in Detroit, so could you please book a ticket for me?

ASSISTANT: Sure. Please send your journey dates.

USER: I would like to go on 12/28 and return back on 12/30.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are ATL and DTW.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with AA airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome.