Dear
It is with deep regret, that we accept your resignation
as [position] of the [organization]
We can appreciate the demands that this position has placed
on you, and appreciate all of the fine contributions you
have made as [position]
Dear
Your counter proposal on the above referenced project
has been reviewed and is acceptable in its entirety.
We are enclosing an executed copy of the agreement along
with two copies for your files.
We are enthusiastically looking forward to this project
and are pleased about having the opportunity to work
together.