You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Evans here.

ASSISTANT: How can I help you now?

USER: Can you please help me in booking a flight ticket from OAK to DCA?

ASSISTANT: Sure, may I know your dates of travel please?

USER: Sure, my travel dates are from Oct 03 to Oct 05.

ASSISTANT: Do you have any price limit?

USER: I would spend maximum 500 for my reservation.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Southwest airline is providing you the ticket with economy class and a single connection, shall I proceed by booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with flight-1021.

USER: Thank you for booking.

ASSISTANT: Thanks for reaching us.