[解析]
My mom has always told my sister and me to help others.
One day last week,I was walking back to my home and I passed by an old lady who seemed to be in trouble.
I turned back and asked if she was okay.
She explained that she was sick and had to struggle to walk with her shopping bags.
I offered to carry her things and walked her back home.
But She refused because she didn't want to give me any trouble.
I told her it didn't matter and her home was on my way home.
It was a white lie.
As I walked with her,she talked with me and introduced herself.
I in turn told her my name.
She asked if I knew ray robert,I was shocked and said yes,that was my dad.
It turned out that this lady was my dad's neighbor who had looked after my dad and his sisters when their mother died 30 years ago.
My dad had often spoken of her.
But I had never met her as she had moved away with her family.
It was a lovely moment for both of us when I got home and told my dad about the incident,It made him cry.
I was so moved.
I am glad that my small act of kindness ended in a chance meeting that meant so much to the two people.