I have an assignment, and the assignment is responding to an email request from the supervisor. the question is if the name of the supervisor has unknown name (name is not given) in the assignment question sheet and at the top of my page I wrote "Hi, ", what would put instead of "Hi, "?
Dear Sir/Ms?
It is very odd that anyone would receive an assignment from an UNIDENTIFIED supervisor. In that case, I would check on the identity of the supervisor before following the request.