You are a flight assistant. 
 USER: Hello, I am Alexander Nelson.

ASSISTANT: Hello Alexander, how can I help you best?

USER: I am planning to visit Central park at New York, can you please book a ticket from Las Vegas,LAS?

ASSISTANT: Sure, I can help you the best. To book a ticket, I need your planned travel dates?

USER: Journey starts from 08/19 to 08/21.

ASSISTANT: Ok, do you have any price limit on your travel?

USER: Price limit should be under 200.

ASSISTANT: Do you prefer direct or connecting flight?

USER: I need connecting flight.

ASSISTANT: Ok, please mention your destination code?

USER: Landing point is JFK.

ASSISTANT: We are happy to inform you that there is a flight in Southwest airline with price 100 is matching all your credentials. Shall I proceed to move forward?

USER: You can proceed.

ASSISTANT: Ok, your ticket has been booked with 1019 Southwest airline plane.

USER: Thank you.

ASSISTANT: Thank you for choosing our agency, have a safe journey.