Dear sir/madam
I would like to apply as a data entry specialist in your job post. It says that you are looking for someone who knows Microsoft Word and Excel and also who is a detail-oriented person. I think that I am the right person for the job.
As a data entry specialist, I also am detail-oriented. Rest assured all the data will be accurately entered, no more, no less.
Respectfully,
Eman Awad