Secretary of the application letter

Dear sir,
　　I have learned from China Daily that your company is looking for a secretary who is fluent in English I would like to apply for the post.
　　My name is 本站 and I'm 25, I've been working as an English guide since I graduated from the English Department of Zhejiang University four years ago. I am hard working and I have learned to operate computer and I can type both in English and Chinese. I seek a position more challenging and with more opportunities than my current one. I think I am fit for the post.
　　Should you entertain my application favorably, I would spare no efforts to acquit myself to your satisfaction.
　　Yours truly,