— Tomorrow it’s going to rain for sure.
— Really? How do you know?
— Because my hair hurts.
— That’s nonsense — hair doesn’t hurt. Ouch! Are you crazy? Why did you yank my hair?
— Well, does it hurt or not?
— Yes, it does! But there was no need to be so rough!
— Do you want me to comb it?
— Nooo... thanks. I don't think my hair is in the mood to appreciate your delicacy today — or ever.
— Fancy a cushion fight?
— Nope.
— A battleship game?
— No. Are you bored?
— Me?
— Is there anyone else in the room?
— I don't know. Maybe there are some ill spirits watching us...
— Stop it. I know what you're trying to do.
— I'm not trying to do anything. I'm just... telling a plausible truth. Mwahaha!
— Stop it! You're trying to scare me!
— Not at all. I can feel them. I can almost touch one...
— You're making it up!
— No, I'm not. There's one right behind you. Bwahahaha!
— Okay, you win. You can comb my hair. But stop scaring me.
— You won't need to say it twice. Pass me/Hand me your comb.
— Has anyone ever told you your manipulative skills/abilities are a bit rude?
— Constantly, but usually too late, just like you.
— You're a sociopathic hair stylist.
— I love you too, but keep talking and I’ll give you bangs.
The dialog is fine. Why not some narrative to it? For example, describe the facial features of the features. Also, who are the two people speaking? (I imagine siblings. Perhaps brother and sister?
I write dialogs this way because, as odd as it might seem, it's actually speaking practice.
: )