I heard the exchange as I waited.
What do you say to the lady for giving you a piece of cheese? The mom asked.
Thank you, the little boy said in a sing-song kind of voice.
I think you can do better than that, the mom suggested.
THANK YOU, the little boy said with confidence and volume.
You are very welcome, the person behind the deli counter answered.
That was very good; it is important to say thank you, the mother reminded him.
The mother handed him his little toy as he sat in the shopping cart.