The child has no idea what a Jedi is or who this Luke guy could be, but he's being hugged and dad seems to think finding him is a good idea so he leans back so he can tilt his head and make a sound that means yes.

It's curious, that dad doesn't seem to know what he can do but maybe it's not just the norm and he's special? Would explain why all these bad people won't leave him and dad alone. So maybe Luke whatever is the answer.

But if he hurts dad...