You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: As I am a scientist, I want to attend science festival with my students at New York, JFK. Can you help me to book a ticket from Washington, DCA?

ASSISTANT: Sure, I am glad to help you with booking. May I know your good name?

USER: Charles Anderson here.

ASSISTANT: Please share me when you are travelling to New York?

USER: My planned dates are 11/19 and 11/21.

ASSISTANT: Do you want any halt in between the journey?

USER: I need connecting flight.

ASSISTANT: Please mention your budget for flight ticket?

USER: Price should not cross 5000.

ASSISTANT: Please hold for a moment, while I check for the flight.

USER: Sure.

ASSISTANT: Thanks for holding, I found a flight of airline Delta, flight number is 1006 and fare is 200. Shall I book the flight 1006 for you?

USER: Go ahead.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us, have a safe journey.