誠に恐縮ですがこの部分に関しては確約はいたしかねますの英語

I'm afraid I have to decline your offer against my will.

We're sorry to say that we are not available for the new reservation.

I do not want to ask you too much, but I would be grateful if you would consider my request.

I should be greatly obliged to you―consider myself under great obligations to you―if you would wait for my payment till next month.

I should be greatly obliged to you―consider myself under great obligations to you―if you would wait for my payment till next month.

Thank you for the request, but reproduction is currently not permitted under any circumstances.

My sincerest apologizes but I would greatly appreciate your understanding.

I wish to place this raw youth under your care.

I am waiting for a reply from you about the delivery schedule.

This service ended on April 30, 2012.

My sincerest apologies, but I would appreciate your understanding.

I expect you are right about this.

It pains me to say that…

What I've got to say is strictly over this table.

Deep is His Majesty's solicitude concerning the matter, we hear.

Let's have a free and open discussion on this matter.

It would be beneath the dignity of a gentleman to do such a thing.

I have mixed feelings about this.

You will please bestow a thought on the matter.