I am writing in reference to the job advertise in ........................................
Gobble garbble..............
I hope that upon reading my CV (or resume depending what country you are in) you will find that I am suitable for the position...etc...........I am available for an interview at your earliest convienence.
I look forward to hearing from you.
Yours sincerely (if you started with Dear Mr. Smith, if Sir, faithfully)
Regards
(p.s. mind block) not black