You are a flight assistant. 
 USER: Hello.

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

USER: I am Jason Harris. I want to book ticket from Denver, DEN to Las Vegas, LAS. Can you book a ticket with the price of 500?

ASSISTANT: Sure, I am pleased to help you. Can you please forward your journey dates?

USER: My journey dates are on 08/13 and 08/15.

ASSISTANT: Ok, Is there any class preferences?

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, we found a connecting flight with a fare of 100 in 1011 UA airline.

USER: Ok, you can proceed.

ASSISTANT: Ok, your ticket has been reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.