Dear Sir or Madam!
I am writing to answer your job advertisement. I would like to apply for the job of Data Entry Worker at your company.
I do not have any experience in this kind of work but I would like to get it.
I have a lot of features, which will help me to serve you. First of all, I am very accurate - that is why you can trust me. I am also very patient - it is difficult to annoy me, so I can spend a lot of time working.
I look forward to hearing from you.
Yours faithfully,
Konrad