It's such a big city. It's easy to get lost, and Aang's puzzled by how indifferently most people tend to pass each other by. At the moment, Aang is also wearing a hat over his head so that his forehead tattoo isn't immediately visible.

He decides to greet the next person he sees as he walks down the sidewalk, and it happens to be this white-haired girl. He smiles and gives her a friendly wave. "Hello! How are you this afternoon?"