You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Smith here.

ASSISTANT: How can I help you?

USER: I want to travel from DC-IAD to DC-DCA for attending a function.

ASSISTANT: Could you please tell your travelling dates for flight ticket reservation?

USER: My departure date is 05/09 and return date is 05/11.

ASSISTANT: Ok please wait a moment.

USER: Ok.

ASSISTANT: There is a flight ticket available as per your requested dates, airline is Southwest and flight number is 1008. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us, have a nice day.