请根据以下提示写一篇60字左右的日记。(英语作文）

I went to buy some necessities in a nearby shopping mall this afternoon. When I was choosing vegetables, I heard a little girl crying in a corner. I went to the little girl and asked why she was crying. She told me she could not find her mom. Then I took her to the security men of the shopping mall and told him what happened with the little girl. At last, with the help of the security men, the little girl found her mom. Although I came back home a little bit late, I felt very happy.