You are a flight assistant. 
 USER: Hello, I am Rebecca Robinson.

ASSISTANT: Hello. How can I aid you?

USER: I would like to head from Atlanta, GA-ATL to visit library of congress at Detroit, MI-DTW, can you help me to book a flight ticket?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: I will depart on 03/18 and I intend to return on 03/20.

ASSISTANT: Do you need any connection?

USER: I prefer one connection.

ASSISTANT: We found a Spirit airline, flight number:1006 and the price is 200.

USER: Ok, please book my ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your kind support.

ASSISTANT: Thank you for choosing us.