Harry knew better than to read through reports while walking; it invariably ended with needing an emergency Reparo for his glasses. However, despite the number of times he'd walked into a wall, he hadn't seemed to learn his lesson. It just seemed so much more efficient to read through reports on his way to lunch, rather than at lunch. This way, he actually got a chance to eat. However, it did mean he made an absolute ass of himself more than once, as was evidenced by the way he was completely unaware of the person in front of him.
"Oh, I'm so sorry. I didn't see you..." He trailed off awkwardly, because that was extremely evident given he'd almost knocked her off her feet. He took a moment to look her over, make sure he hadn't caused any visible damage, but to his relief she looked fine. Rightfully irritated, but fine. "My fault; I really shouldn't read while I walk. Are you all right?"