You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Please help me to book a flight ticket from IAD to DCA.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from Oct, 26 to Oct, 28.

ASSISTANT: May I know your connection limit?

USER: I prefer single connecting flight.

ASSISTANT: May I know your good name?

USER: Ryan Harris.

ASSISTANT: Do you have any other requirements?

USER: No.

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

USER: Please proceed for booking.

ASSISTANT: Your ticket has been confirmed with flight number 1019.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.