Dear Sir/Ma, 
Application for an office assistant position. 

I'm Ndenu faith,  a recent graduate of ICT engineering. I wish to be considered  for the
Role of an office assistant in your company.
I have gained experience in office and secretarial jobs over the years and gained skill in solar power and installations during my study. 
I'll be glad to be considered for the job as I promised to make meaningful contribution to the success of the company
Yours Faithfully 
Ndenu Faith