You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking a flight ticket from Washington, IAD to reach JFK?

ASSISTANT: Sure, please share your planned travel dates.

USER: My journey dates are from Dec 17 to Dec 19.

ASSISTANT: Which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: May I know your airline preference?

USER: I am ok with any airline.

ASSISTANT: Are looking for any specific time to board and arrive?

USER: I am ok with any time.

ASSISTANT: May I know your name please?

USER: My name is Margaret Jackson.

ASSISTANT: We have a direct flight from United airlines, costing 200. Shall I proceed with it?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket is confirmed in economy class with flight number 1005.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.