salary increment request

sir ,
can you please correct my below letter?

I have worked for this company for the last one year. During this time I have discharged my duties to the best of my abilities. I have been sincerely dedicated and have constantly worked hard. I have been committed to my job, and have sought to achieve management's objectives.
Now I am getting AED 4000/- as my monthly salary. I would like to request you for an appreciable salary increment for my performance.
I have always worked hard and with commitment, and I hope you will consider my request positively.
Thank you very much for your time and consideration.