Harry is distracted from his paper, however, by an instant flirtation with the young waitress, a saucy cutie who informs him, although he asked only with his eyes, that she gets off work at 11. She indeed waits for him on the platform, but the Chosen One must respond to his higher calling from Dumbledore (Michael Gambon), who either materializes, gets off a train, or has a pied-a-terre right there in the Underground. I for one will be disappointed if that waitress (I think her name is Elarica Gallagher) doesn't turn up again in "Harry Potter and the Deathly Hallows," whose two parts will conclude the series in 2010 and 2011.