You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Alexander Mitchell. I want to book a flight ticket with a price limit of 1000.

ASSISTANT: Sure, we are here to reserve your seats in comfortable way. May I know your journey dates?

USER: Sure, my departure is 02/25 and my return date on 02/27.

ASSISTANT: Can you share your airport codes?

USER: I am planning to celebrate my son birthday in MGM Grand resort in NV - LAS and my origin from FL - MCO.

ASSISTANT: Wait for a moment, I will get back to you.

USER: Sure.

ASSISTANT: Best wishes to your son. There is no flight available with your journey dates.

USER: Not an issue.

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

USER: Thank you, for your good service.