You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Parker.

ASSISTANT: How may I assist you for the day?

USER: I want to book a ticket from MCO to DTW, could you please help me to make a reservation?

ASSISTANT: Sure, we are here to help you with that booking.

USER: Thank you.

ASSISTANT: May I know your planned journey dates, please?

USER: My travelling dates are on Apr 19 and 21.

ASSISTANT: Do you need a direct flight or a connecting flight in your journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No. I need to depart at evening time, can you please check that?

ASSISTANT: Sure, please hold for a moment.

USER: Sure.

ASSISTANT: There are no flights available in this route as per your travel dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.