Laura has a big box of sweets. Her little brother, Kevin, wants a sweet.
Kevin: I want a sweet!
Laura: No, Kevin. You can’t have a sweet.
Kevin: Laura, can I have a sweet?
Laura: No, Kevin. You can’t have a sweet.
Kevin: Laura, can I have a sweet, PLEASE?
Laura: Yes, now you can. Here you are.
Kevin: Great!
Laura: Kevin! What’s the word?
Kevin: THANK YOU!
Now Kevin is happy. He knows the magic words.