You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

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

ASSISTANT: Sure, may I know your good name?

USER: Myself Anna Turner.

ASSISTANT: Could I have your journey dates, please?

USER: My preferable journey dates are May 13 and May 15.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight which arrives in evening time.

ASSISTANT: Ok, please wait for a minute.

USER: Ok, I will wait.

ASSISTANT: We found a connecting flight 1021 from Spirit airline has fare 100 and the arrival time is 20:00 PM. Shall I proceed?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.