No I wouldn't ask that.  

Seriously though, where I live, this hardly ever happens unless we're talking about street walkers in downtown. Many providers (at least the ones I'm interested in seeing) and johns are all paranoid about busts, hotel management working with LE, and all that fun stuff that they would never talk to someone in an elevator strictly with the intent of working unless he is verified first.... meaning, she won't assume it's safe to talk about the hobby.  Seeing how agency girls and indies operate in my side of town, it's a different culture.  

I guess it still happens but it is likely on the extremely rare side. When a stranger asks a provider for her name in a hotel elevator where I live, the girl will most definitely not reveal her work name in fear of a bust or hotel management guys lurking or something like that.  

I guess vegas is different even with strangers in the elevator?  

This is fun actually. Next time I visit vegas, I might try that out:  

HI, I'M A DRUNK MONGER. WHAT IS YOUR NAME?   DO YOU HAVE CONDOMS?  

DO YOU HAVE A NUMBER OR A WEBSITE?  

I GOT CASH. WOULD YOU BE INTERESTED IN PLAYING FOR A BIT????  

CAN I TAKE YOU UP TO MY ROOM, WHIP OUT MY PACKAGE, AND HAVE SOME FUN????

DO YOU TAKE BITCOINS?