You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to celebrate my brother's birthday at New York, please help me in booking a ticket from DCA to JFK.

ASSISTANT: Sure, can you please share me with your dates of travel?

USER: My planned dates are 06/20 and 06/22.

ASSISTANT: May I know your name please?

USER: My name is Robert Jackson.

ASSISTANT: There is a flight with the connecting flight of fare 100 and the airline is naming as Delta, are you ok with this booking?

USER: Ok, please book the ticket.

ASSISTANT: Ok, your ticket has been confirmed with the flight number 1001.

USER: Thank you for your assistance.

ASSISTANT: You are welcome, have a safe journey.