Dear Mr./Miss/Ms/ Mrs.
This is in reference to your advertisement for (write the vacant position that was advertised in the newspaper or website. Alternatively simply write the reason of writing the letter and include the position you are applying for).
I hold qualifications in …. (Describe your education, qualities, skills and experience if any).
Enclosed you will find my resume and testimonials for your review. I am available for an interview as per your convenience. I thank you for your consideration and look forward to hearing from you soon.