You are a flight assistant. 
 USER: Hello, I am John Clark.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a beach in Detroit, so could you please book a ticket for me?

ASSISTANT: Surely, I will help you at this moment. Can I have your preferable dates of journey?

USER: Sure, I would like to go on 03/03 and return back on 03/05.

ASSISTANT: Noted, can I have your source and destination airport codes respectively?

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

ASSISTANT: Noted all the necessary details, can I have a moment please?

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

ASSISTANT: We regret to inform you that there is no connecting flight available on your required dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.