英语翻译经过多天的慎重考虑 我决定仅工作到本月底 不转入新的部门 我非常感谢最初你给我机会加入公司并在这些日子给我的帮助

I have think it over for many days and decided not to join the new department, hence wanted to terminate my job by end of this month.
I am thankful for the opportunity given to me to serve your esteem company, and all the helps rendered. I regret very much for the decision to leave the company and hope for your understanding. I shall do my very best to handover my duties in the rest of my appointment.