Did you clean your room today?
No, not yet.
Well, when were you planning on doing that?
I'm going to clean it up later.
Didn't I ask you to clean it up earlier?
I'm going to clean it.
I want you to vacuum in your room, and don't forget to dust everything.
I know. I'll do it.
Make sure you clean it up before you do anything else.
I'm not going anywhere until later, so I'll clean it then.