My Friend as an interviewer, He occasionally conduct interviews that become painful as time goes on because the candidate is doing so poorly.
He have the impression that, in these cases, the candidate internally knows they are not getting the job, and would just like to end things as soon as possible (as would He).
In the past, He have handled phone interviews of this type by ending a little early and giving a standard closing. However, He have empathy for the candidates and would feel better if He could say something nice without being dishonest.
They’re not getting the job, but He may still respect them and honestly wish them well. He is not really sure how He could tactfully express thoughts like this, though.
My question is mainly about phone-based interviews, but I’m interested in answers that also apply to in-person interviews.
To be clear, this question is how, specifically, to be nice at the end of a bad interview, so I’m looking for something more specific than simply ask how to end a bad interview. (Hence I don’t consider this a duplicate of questions asking how to end a bad interview.)