You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help that you need?

USER: I am Brian Smith. I want to travel from LAS to JFK. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am oblige to help you and may I know your desired travel dates?

USER: I want to travel in the flight on Jan 03 and Jan 05.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I want to return in afternoon time.

ASSISTANT: Please allow me a moment.

USER: I want to travel in economy class. I am looking for a direct flight.

ASSISTANT: Thank you for your information, there is a flight 1023 with a direct flight in Delta airlines and the fare of the ticket is 200. Is it ok for you to book the ticket?

USER: Book the ticket for me.

ASSISTANT: Your flight ticket booking is confirmed on your travel dates.

USER: Thank you for your help.

ASSISTANT: You are most welcome and have a happy journey.