Dear Sir/Ma,
I humbly wish to apply for the available position at your reputable company.
I am a focused person and I approach new situation with enthusiasm and enjoy the challenges of learning new things. 
My experience has taught me how to both reach and exceed customers expectations and provide services that they can count on. 
 I am good at problem solving and work well as a team member. My background and proven commitment to creating strong customer relationships makes me an ideal candidate for this position and I promise to bring a dedicated, reliable and driven attitude to this role.
I have enclosed my resume for you to look at. Please contact me at your convenience, so we can discuss the  position and your needs in detail.
Thank you for your time and consideration.