You are a flight assistant. 
 USER: Hello.

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

USER: Can you help me in booking a flight ticket from JFK to LAX?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on Aug 20th and return back on Aug 22nd.

ASSISTANT: Noted. Do you have any preferences?

USER: Make sure it is a single connecting flight.

ASSISTANT: May I know your name please?

USER: Myself Emily Moore.

ASSISTANT: There is a connecting flight available with Delta airline which departs at 16:00 PM and arrives at 21:00 PM, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1019. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.