Dear Sir/Madam,
I would like to apply for the task that you offer. I would gladly help to entry your data. I've had experience before in putting data from several websites.
Will do the best to meet your satisfaction. I'm the type of person who appreciates time so much so that I'll do my best in the shortest time possible.
Looking forward to hearing from you. I'd like to discuss this project with you in detail.
Regards,
Marissa R.U.