Please Press the Button!

I'm sure you've often had this experience: you're running to catch an elevator, and you call to the person already there to hold it for you. I just discovered that there's a natural, related activity that has somehow escaped my notice all my life. (I would expect this situation to arise more at work than in a residential building.) Here it is: You want to catch an elevator, and you see a person about fifty feet ahead of you walking right past that elevator. You call to them, "Please press the button for me!" If they do, the elevator's more likely to be right there for you when you walk up to it.