You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to our agency. What kind of service do you need from our agency?

USER: I would like to visit Rocky Mountain Arsenal National Wildlife Refuge at Denver. Will you help me in booking the flight ticket?

ASSISTANT:  Sure, we are here to make your journey comfort. Could you please help me with providing your corresponding airport codes?

USER: I am willing to start my journey from Las Vegas, NV-LAS to Denver,CO-DEN.

ASSISTANT: Ok, can you please share your journey dates that you prefer to travel?

USER:  I want to travel on 06/04, and need to catch return flight on 06/06.

ASSISTANT: Ok, please wait for a while, let me check for the best flight availability for you in this route. In the mean while let me know the specifications you have.

USER: Ok, I want a break in my journey, so make sure that flight should contain 1 connection.

ASSISTANT: Ok, how much you can spend for airfare?

USER: As, my budget is low I can afford only up to 500.

ASSISTANT: Ok, let me check with that.

USER: Ok, I will wait for your response.

ASSISTANT: AA airlines is providing you a connecting flight with fare of 200. Are you comfortable with this flight?

USER: Yes, you can make the reservation with the name of Kimberley Moore.

ASSISTANT: Ok, your ticket is reserved with the flight number 1012.

USER: Thank you for helping me with the great assistance for booking my ticket.

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