You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from DCA to IAD.

ASSISTANT: Sure, let me know your trip dates please?

USER: My travelling dates are from Jan 16 - 18.

ASSISTANT: May I know your connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Do you need any other preference?

USER: Return time is in afternoon.

ASSISTANT: Can I know your name please?

USER: Melissa Hill.

ASSISTANT: American Airlines is providing connecting flight with the ticket fare of 200 and depart time is 14:00 hours, arrival time is 18:00 hours. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1015 and an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.