You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I support you?

USER: Please reserve me a flight ticket from MSP to DCA.

ASSISTANT: Sure, I am happy to help you. When are you willing to travel?

USER: My travel dates are Feb 17 and Feb 19.

ASSISTANT: Do you have any break in between journey?

USER: I prefer connecting flight on this route.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Can I have your good name?

USER: I am Nicholas Hall.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.