You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book the flight ticket from DCA to DTW. Can you please help me?

ASSISTANT: Sure, let me know your trip dates?

USER: I prefer to travel in between Mar 19 and Mar 21.

ASSISTANT: Do you have any connection limit?

USER: Connection limit required.

ASSISTANT: Is there any other specification?

USER: No.

ASSISTANT: May I know your good name?

USER: Stephen Hall here.

ASSISTANT: We found a Southwest airline with flight number 1004 and fare 300 with class is economy. Shall I proceed?

USER: Sure, proceed to book it.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you for reaching us.