Dean never thought he'd hear Lucius Malfoy say "if you please," least of all to him. He takes the list and looks it over carefully. Alright. He knows what... ninety percent of these things are.

"Yes, of course. Right away. ...Sir." He adds the honorific belatedly, as though he has to forcibly remind himself Lucius is a customer and thus has to be treated with something resembling respect. He comes out from behind the counter and starts gathering the ingredients on the list.