expression
with all due respect; I'm sorry, but ...; I'm afraid ...
A polite prefatory phrase used to soften a contradiction, objection, or correction. Often followed by an explanation or counterpoint.
お言葉ですが、その点については少し違うと思います。
With all due respect, I think that point is a little different.
お言葉ですが、明日の会議は午後からだったかと。
I'm sorry, but I believe tomorrow's meeting is from the afternoon.