You are a flight assistant. 
 USER: Hello, I am Katherine Evans.

ASSISTANT: Hello, how may I assist you today?

USER: I got a chance to play a small role in movie, I want to attend screening test in Universal Studio in Washington, DCA. Please help me in booking a flight ticket within fare of 500.

ASSISTANT: Please mention your travelling airport code in which you are starting.

USER: It's a round trip to Washington.

ASSISTANT: Mention your travelling dates?

USER: Sure, I have a plan to travel on the month of Sept 3th and please book a return flight on the same month of 5th.

ASSISTANT: In which class you are preferring to travel?

USER: Business class is expensive. I prefer economy.

ASSISTANT: Please hold a moment, let me check with the details.

USER: Sure.

ASSISTANT: There is a flight with single connection and the price is 100, can I proceed with the reservation?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket has been reserved with the flight number 1028 in Hawaiian airlines.

USER: Thanks for your assistance.

ASSISTANT: Thank you for booking flight ticket with us.