You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me in booking my flight ticket from ORD to DEN?

ASSISTANT: May I know your planned dates to travel?

USER: My planned travel dates are Mar 22-24.

ASSISTANT: Is there any connection limit?

USER: I prefer to fly in connected flight.

ASSISTANT: Do you have any other requirements?

USER: No more requirements.

ASSISTANT: May I know your good name?

USER: Myself, Christopher Allen.

ASSISTANT: United Airlines providing connecting flight in the economy class with fare 100, shall I proceed for booking?

USER: Ok, please go ahead.

ASSISTANT: Your ticket has been confirmed with flight number 1000.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.