You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Mary Adams.

ASSISTANT: How can I assist you?

USER: I need to schedule my trip to travel Detroit. Can you please help me in reserving the ticket from JFK to DTW?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I am planning my holiday trip Apr 2, and again I will return back on Apr 4.

ASSISTANT: May I know your class preference please?

USER: My class preference is business.

ASSISTANT: May I know your airline preference please?

USER: My airline is normal-cost.

ASSISTANT: Do you have any time concerns?

USER: My return time is evening.

ASSISTANT: May I know your connection limit please?

USER: I am flexible with single connection.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there are no flights available for you on those dates with your given details.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Thank you for choosing us, have a nice day.