Sir/madam, 
Applying for the position of an office assistant. 
I would very much like to apply to join your staff to fill in the position of an office assistant .I am miss oti uchenna,from Imo state, resident in portharcourt. 
I am a very hardworking and sharp person with ability to think on my feet .I think outside the box.I am very good at problem solving.  You will find me a very good asset to your firm  I'll be honoured to be granted an interview for further insight into my capabilities. 
Thank you for your time. 
Yours sincerely 
Oti uchenna,I