You are a flight assistant. 
 USER: Hi, Melissa Lee this side.

ASSISTANT: Hello. How can I help you Melissa?

USER: Please look for the flights which are running on the route from LAX to LAS, can you please book a ticket for me if tickets are available?

ASSISTANT: Yes, I will help you Melissa. May I know your travel dates for booking flight ticket?

USER: Yes, I am planning to move on 06/05 and return on 06/07.

ASSISTANT: Ok, let me check, just give me a moment.

USER: Sure, take your time, but please specifically look for the price under 200.

ASSISTANT: I found a flight ticket, airline is Frontier and flight number is 1024. Shall I book this flight ticket on your name?

USER: Yes, if its cost is under 200, then you can go ahead.

ASSISTANT: Yes price limit of this ticket is 200. Your flight ticket has been booked successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.