You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to visit to Orlando to attend my sister's marriage , can you please help me to make a reservation from DTW to MCO?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are on Aug 11 and Aug 13.

ASSISTANT: Would you like to travel in a connecting flight or direct flight?

USER: I need a single connecting flight.

ASSISTANT: May I know your good name please?

USER: My name is Mark Nelson.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.