You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Justin Mitchell want to visit LAS, can you book a ticket from DEN?

ASSISTANT: Sure, can you please let me know your dates of travel?

USER: Sure, my travelling dates will be 02/22 and 02/24.

ASSISTANT: Please be hold on for a moment.

USER: Ok.

ASSISTANT: I found a flight with the connecting flight of fare 100 and the airline is naming as Frontier, shall I book this ticket?

USER: Ok, proceed with my booking.

ASSISTANT: Ok, your ticket has been reserved with the flight number 1000.

USER: Thank you.

ASSISTANT: You are welcome, have a happy journey.