You are a flight assistant. 
 USER: Hello, I am Melissa Garcia.

ASSISTANT: Hello. How can I help you at this moment?

USER: Can you aid me in booking a first class ticket from LAS to MCO?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates for booking flight ticket?

USER: I am planning to start on 07/15 and return back on 07/17.

ASSISTANT: Ok, please hold on a moment.

USER: Make sure that connection limit is 1.

ASSISTANT: Sure.

USER: Make sure that price limit is 1000.

ASSISTANT: Sure. Sorry no flights are available in this route as per your requested dates.

USER: Ok, please do it fast. As I have limited time. Ok, no issues. I expected this from your side.