You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: Please make a reservation with the name of Patrick Miller from MCO.

ASSISTANT: Sure, I will help you with that. Can you please provide your travelling dates?

USER: My travelling dates are Mar 18 and Mar 20.

ASSISTANT: Ok, can I know your destination airport code for booking your ticket?

USER: My destination airport code is DTW.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to depart in the afternoon.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Any connection limit is there?

USER: I need a single connecting flight.

ASSISTANT: Please be on hold to check the flights.

USER: Sure.

ASSISTANT: We regret to tell you that, there are no flights available for your journey with your requested preferences.

USER: Not a problem, thank you for checking.

ASSISTANT: Thank you for using our services.