Format Of Resignation Letter

Hi!
I was appointed as an executive secretary and then after 1 and a half month i was asked to handle the front desk and that i was doing from last 1 month. In the meanwhile i started searching for another job and now i have got it.
So now i want to give the resignation letter in which i want to mention that because they have changed my profile that's y i m leaving.
so what should be the format please tell me.
Thanks,
Jyoti

hi jyoti even i have the same condition which u faced..plz let me know how you resigned..i was handling the HR & Admin deptt..now handling front desk from 1 week bt i dont want to.hope to hear from u soon.
take care

Hi Jyoti,
According to me you should not mention any such sentence because while shifting they must have asked you regarding the same and if without prior notification they have shifted then it is your mistake that you have started and continued for 1 month you should have objected at that moment itself because it was not your promotion it was demotion then it is your mistake also. Now as you have already got new apportunity then just give the resignation letter and also during the exit interview they will definately ask this question so then you can explain your point.
Thank You...