You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I want to attend a Seminar in Charlotte. Can you please help me for that?

ASSISTANT: Sure, we are happy to help you. May I know your travelling dates?

USER: My travelling dates are Oct 28 and Oct 30.

ASSISTANT: Kindly mention your source airport code.

USER: My source airport code is DTW.

ASSISTANT: Do you have any break in between journey?

USER: I prefer single connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: I prefer business class.

ASSISTANT: Can I have your good name?

USER: My name is Jack Williams.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for opting us.