You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Could you please book a flight ticket from DTW to ORD as I want to attend a pioneer festival?

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

USER: I want to travel on Oct 12 and return back on Oct 14.

ASSISTANT: Do you prefer stopover in between your journey?

USER: I need a direct flight.

ASSISTANT: Please let em know if you have any other specifications.

USER: I don't have any other specifications.

ASSISTANT: May I know your good name please?

USER: My name is Jerry Brown.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Not a problem, thank you.

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