I am extremely pleased to hear from you./ to see your advertisement for the position in .... And I would like to write a letter to tell you that.../ I am confident that I am suitable for the kind of the job you are advertising..../ I feel I am competent to meet the requirements you have listed. On the one hand, .... On the other hand, .... I am enclosing my resume for your kind consideration and reference.
I shall be much obliged if you will offer me a precious opportunity to an interview. I will greatly appreciate a response from you at your earliest convenience/ I am looking forward to your replies at your earliest convenience.