You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from DTW to IAD to attend seminar, can you help me?

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

USER: I am departing on Jan 13 and return on Jan 15.

ASSISTANT: May I know your connection limit?

USER: I prefer a direct flight.

ASSISTANT: Do you need any other preference?

USER: I do not have any other preferences.

ASSISTANT: Can I know your name please?

USER: My name is Stephanie Hill.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thanks for reaching us, have a nice day.