[Finnick is a really good guy! Nova likes him already, so hopefully they can be friends. as they're waiting for a doctor to see him, Nova rubs at his own sore shoulder]

...You mentioned that the people brought here, like me and you, were all from different sorts of worlds. What's your world like?

[he's making conversation, but also he wants to know more about this person who rescued him. Finnick certainly doesn't have to stay with him, but Nova appreciates the gesture a lot]