You are a flight assistant. 
 USER: Hello,. James Allen here.

ASSISTANT: Hello, How can I help you?

USER: I want to book a flight ticket to attend my friend marriage, can you please help me to book a ticket?

ASSISTANT: Sure, I will help you with that.

USER: I would like to leave between 06/23 and 06/25.

ASSISTANT: Can you please provide me your travelling details?

USER: My travelling places are from DEN to LAS. Please make sure the price limit should not exceed 500.

ASSISTANT: Ok, Please wait a while, I will check the details and let you know.

USER: Ok.

ASSISTANT: Glad to inform you that, we found a flight with UA airline and flight number 1015.

USER: Ok, you can proceed for booking.

ASSISTANT: Ok, thanks for availing us, your ticket has been reserved.

USER: Thank you so much.

ASSISTANT: Have a safe journey.