You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Raymond Allen. I would like to book a ticket to Detroit, can you please book me a ticket?

ASSISTANT: Sure Allen, may I know your preferred travel dates?

USER: I am travelling on these dates 03/31 and 04/02.

ASSISTANT: Can you provide you airport codes too?

USER: My departure and arrival airport codes are MCO and DTW.

ASSISTANT: Yes Allen, there is a flight available with 2 connection limits, the airlines is AA and the price of the ticket is 200. Do you want me to book it for you?

USER: I would prefer with one connection, please check once.

ASSISTANT: Sorry Allen, there are no single connecting flight available at those locations.

USER: Ok no problem, thank you for your valuable services.