Dear

This is to acknowledge your letter of     [date]
You are definitely to be commended for your progress
during the past two months.

I do believe, however, that your recent request for a
raise is premature.  I would suggest that it would be
more appropriate to discuss a salary increase after you
have worked here for six months.  If you continue on
the same path, I am certain that your timely request
will be given careful consideration.

You are doing a fine job, keep up the good work!