[That's sweet, looking genuinely apologetic. Sebastian cares so much about that.]
Sir, [he continues, climbing down from his stool.]
Perhaps you would please kindly consider if you have other places to be today? I'm certain I should not keep you, if that is the case. For example, I hear there are circuses that will happily accept any complete waste of space as long as they have anything sufficiently freakish to display.
I'm sure such a place would greatly appreciate your talents. And so, if you would please kindly allow me to continue working...
[Probably in other circumstances, Sebastian would at least be a little curious about the wings. Unfortunately, as you can see, he broke. 80% polite phrases and nothing else left of him.]