You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to attend for my friends marriage in IAD. Can you please make a reservation from DTW?

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, I want to depart on Feb 22 and need to return on Feb 24.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: I am Justin Mitchell.

ASSISTANT: Sorry to inform you that there are no flight services available on your given routes.

USER: Ok, no problem.

ASSISTANT: Thanks for contacting us.

USER: Thank you for checking.