Considering all the madness of the last week, the Doctor took an opportunity for a little alone time as he tried to figure out just what he was doing in L.A, and what exactly was going on. He soon got bored of thinking so deeply about it all and settled back into blind acceptance of the whole situation. It would be figured out eventually, but perhaps for the time being he could just let things progress as they would.
He was slightly surprised that someone had actually spoken to him; he'd found that even as people accidentally shoved him to the side while passing they didn't even lift their eyes to acknowledge his existence. It was all he could do to wonder if he was actually invisible, so this confirmation that he actually could be seen was rather reassuring.
"It's beautiful. So busy it's hard to take in all the possibilities at once," he smiled, even though on looking at the speaker he was quite surprised to see the words came from such a young girl. It was definitely a rarity to hear such thoughtful words from Earths youth that he couldn't help but smile a little wider at her appearance.