terminating engagement

　　to: robert bush, sales manager

　　from: bob wang, sales development

　　date: may6, XX

　　subject: terminating engagment

　　mr. bush, i have worked in the sales development as a salesman for six years, and i have been satisfied with this position.

　　however, a friend of mine introduced me to abc company, and i have decided to accept a post that will give me greater possibilities for promotion and an increase in my salary. i therefore write this memo as formal notice to terminate(终止) my engagement with you one month from todays date.