You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I need to book a flight ticket from DTW to DCA, can you help me in booking a flight ticket?

ASSISTANT: Sure, please share me your travel dates.

USER: Sure, my travelling dates are Oct 7 and Oct 9.

ASSISTANT: May I know your class preferences?

USER: I prefer maximum one connection.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Sure, Nancy Roberts here.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.