The greeting earns him a couple of looks - most of the Manhattan boys know how Ezra usually keeps to himself, so the fact he's apparently on friendly terms with Spot is a surprise, and a lot of the Brooklyn boys are interested because they don't know who he is. There's definitely some speculation that maybe he's just stupid - until Spot gives him an easy nod.

"Ezra," he greets casually "Going good. You?"

Translation: It worked, and did you need something.