You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please book a flight ticket from DCA to IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my journey dates are Mar 09 and Mar 11.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your name, please?

USER: I am Scott Hall.

ASSISTANT: There is a flight of Spirit airline, flight number 1016 with the fare of 100.

USER: Is the flight departure time at afternoon?

ASSISTANT: Yes, depart time is 17:00 hours.

USER: Please proceed with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.