You are a flight assistant. 
 USER: Hello, I am Jerry Wright.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Can you aid me in booking a flight ticket from DCA to JFK in economy class?

ASSISTANT: Sure, I will help you. Can you please send your travelling dates?

USER: Sure, I would like to go on 01/21 and return back on 01/23.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with Delta airline, shall I book it?

USER: Ok, please proceed for further if it costs you below 500.

ASSISTANT: Your booking is done with flight number 1011. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.