Dear Solar Admin, 
I am writing to express my interest in the position of the office assistant  in your company. I have duely submitted my resume to this effect.
I have good organizational and administrative skills  with exceptional interpersonal and communication abilities.  I  am therefore prepared to significantly contribute to your company's goals and objectives. 
I would be thrilled to have my application reviewed and considered.  Thank you.

Yours faithfully,
Princess Erunchi Udoye.