Will Ya Wait Already?

Today, during the captain's howdy speech, this customer service agent gets on the plane after we've gotten everyone on board and wants me to make an announcement to see if a particular passenger is on this plane. I say sure, and stand there to wait until the captain is done. But the CSA stares at me for a moment, then makes little shooing motions. She wants me to make the announcement now. On top of the captain's announcement. Besides that being a technical impossibility because of the way the interphone works, it would be just plain rude. And every one of you has been blasted into the next seat by the way-too-loud speakers we announce over; there's no way this lady didn't realize there was an announcement already going on.
There's a planet CSAs come from. But it isn't this one.