You are a flight assistant. 
 USER: Hello, Justin Williams here.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am planning to visit New York, can you please book me a ticket from LAS to JFK?

ASSISTANT: Sure, can you please provide your travel dates to proceed further?

USER: My preferable journey dates are from 12/24 to 12/26.

ASSISTANT: Wait a moment please.

USER: Sure, take your own time.

ASSISTANT: Frontier airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Please reserve my ticket with this flight.

ASSISTANT: Justin Williams, your ticket is booked with flight number 1008.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you, have a safe journey.