"Twelve ninety-nine, first window." is what usually happens. I'm not the kind of dork that repeats it as "One Two Decimal Niner Niner." The ham bands are full of geezers that'll happily play that game with me if I want.

So, per the Pilot/Controller Glossary, "OVER" means "My transmission ended; I expect a response." Because the communique at the speaker is finished and I don't expect a response, "OUT" would be more appropriate, meaning "Conversation is over, I expect no response." Though on the air you'll often hear "Good day" which isn't in the P/CG but I think is nicer.