[Sokka looks to Zuko at the mention of Raava's name. All he does is give a little shrug. He clearly didn't recognise the name much at all, even if it's supposed to be from Avatar World, as Zuko was guessing.

[But Mrs.(?) Spirit thingy was looking for Wan?]

Wan? [Sokka sounds a bit like he's in disbelief about why anyone would ever be looking for Wan.] You mean, guy about this tall, [he continues as he raises his hand to about Wan's height,] tells terrible jokes all the time, kind of got a temper and a weird streak a mile wide, big head of hair, that Wan?

Yeah, we know him.