Okay, little buddy! Imagine a big room with lots of screens, like a giant movie theater, but instead of movies, it shows airplanes all around us up in the sky. These special people are called air traffic controllers.
When an airplane wants to go up in the sky, the controllers can see it on their screens. They talk to the pilots using radios, like walkie-talkies. They tell them when it’s the perfect time to take off, which means to leave the ground and go up into the sky.
They also tell the airplanes when it's time to land, which means coming down safely to the ground. And they help them know where to fly in the sky, like giving them a map so they don’t bump into each other!
So, the air traffic controllers make sure every airplane knows what to do, just like a big team helping each other, so everyone can fly safely!