For a moment, Paddy was rather confused. These girls were acting like they didn't know him (and as far as he knew, they didn't, he'd never introduced himself) but they were using his name. He blinked, raising his eyebrow, before the penny dropped and he grinned, chuckling. "Y'know, ladies, I think you'll find amusement in the fact that my name actually is Paddy. Go ahead, giggle. Paddy Byrne at your service." He did a sweeping bow, as low as possible before straightening back up and winking.
"You don't know me but I know you. You're Mary, Harry Fisher's little sister," He gestured to Mary, giving her a winning smile. "Pretty little thing that you are. And you..." He gestured to Delia now, his smile softening a little. Softening, not weakening. "You're Delia Slater. Just as pretty, it has to be said. So, ladies, now I've introduced myself, my question still stands. Would you object to me tagging along on your little adventure? It doesn't do for ladies to be out without a chaperone at this time of night, as much as I'm certain you can take care of yourselves."