Isn't it past your bedtime already?
I am not sleepy.
It's getting late, and you have to wake up early tomorrow.
There is no way that I can fall asleep right now.
Try listening to some soft music.
It won't work. I'm nowhere close to being tired.
I really don't care, just go to sleep.
What if I stay up and do something, until I get tired?
You'll be up all night if I let you do that.
I'm going to get to sleep eventually.
You need to go to sleep now, so go to sleep.
Good night.