You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to book a ticket from CLT to DTW. Can you please help me out?

ASSISTANT: Sure, can I know your trip dates?

USER: I am planning to travel on Dec 25 and return back on Dec 27.

ASSISTANT: Do you prefer a connecting flight?

USER: I am for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: My name is Katherine Hall.

ASSISTANT: Thank you for your details, we found a connecting flight 1019 in class economy which is in Spirit airline. Shall I proceed?

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.