How to pronounce “greenbrier” in English

So I said “Fine here's the list of our clients go talk to them see if they get any service.” Well after about two weeks he came back and he said “I want to make a special case.At the next Advertising Agency Convention down at the Greenbrier I want to introduce you as somebody who knows more about making a profit than anybody I have yet met.”So what happens up on the stage for a couple of kids it was