You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a ticket from DCA to JFK. Could you book a ticket?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: Travelling dates are from Dec, 25 to Dec, 27.

ASSISTANT: Are you looking for any preferred class?

USER: I am comfortable with any class preference.

ASSISTANT: Do you have any other specifications to be met?

USER: I prefer connecting flight.

ASSISTANT: May I know your name to proceed?

USER: My name is Brenda Adams.

ASSISTANT: We have found a connected flight of Southwest airlines, flight number-1012 class-economy and fare is 100. Shall I proceed with the booking?

USER: Please book a flight.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.