Write a story that ends with the expression, it pays to be kind to strangers​

Once upon a time there were two girls Lilly and Sharon. They were walking down the street together. While they were walking by they saw a homeless man sitting out on a cardboard box. Seeing him, and feeling bad for a man that's been turned out to the street, Lilly and Sharon immediately started emptying out their pockets for spare change to give the man. He thanked them and asked where they lived. Dangerous as it was, Lilly told him that if he wanted to see them sometime, to come to the stream. After that, the two girls quickly went on their way. Two days later, they got a knock on their door, and when they opened it, what a suprise they got! Standing there was the same homeless man they had helped out on the street two days ago, looking really grand! The man explained that he was not really homeless, and that he wanted to carry out an experiment to see if people would help a black man out on the street. The man also said he'd be giving 10,000 dollars to the people that had helped them to thank them. The two girls were shocked! They collected the money from him and thanked him. It always pays to be kind to strangers, you never know what they are going through.

Explanation:

Not only should you be kind to strangers, you should also be kind to others. You never know what strangers are going through, or how hard their life is, and that goes the same for anybody else out there, so it really helps make it better if you are kind to them.

are you asking for an essay and whats the story?