帮忙写一个英语书面表达！急急急！！！

周末，你和妈妈逛商店，看到一位外国人想买一双鞋，他不懂汉语，售货员也听不懂英语，你上前帮他们翻译。帮他买到了合适的鞋，这个外国人很高兴，并向你致谢，妈妈表扬了你。

请你根据以上内容及重点提示用英文写一篇日记，词数80词左右。提示用语：salesgirl 女售货员。

帮帮忙，写出初三水平的书面表达！急急急！！！

Dear Diary,
Today I went shopping with my mom and I did a great thing. When I was shopping, I saw a foreigner trying to buy a pair of shoes. He doesn't speak Chinese and the salesgirl doesn't speak English. I went up to them and helped the foreigner translate. After a while of translating, he bought the pair of shoes he like and said thanks to me. This foreigner was very happy and my mom said what I did was very good. We went home with a full car of groceries.
September 25, 2009(日期，自己篇)
在上面的Dear Diary 如果不喜欢可以不要。希望帮到你。