You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to visit Washington, will you help em in booking the flight ticket from SEA to DCA?

ASSISTANT: May I know your trip dates?

USER: My travelling dates are Nov 11 and Nov 13.

ASSISTANT: Do you prefer any connections?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other requirements?

USER: No, thank you for asking.

ASSISTANT: May I know your name?

USER: Myself Eric Hill.

ASSISTANT: Delta airlines is providing a connected flight in economy airlines.

USER: Sure, you can proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for helping me.

ASSISTANT: Thank you.