Dear Mr and Mrs Hagel, Hope this letter finds you in good health and spirit. I am sorry that it has come to this, but I had no other choice but to write this letter to you.
Dear Mr and Mrs Donald, I am Beth Scarlet, your next-door neighbour, writing to express my concern about the noise your dog makes at night. I intended to write to you a few days ago but waited patiently with the hope that the dog would stop barking loudly at night and will save me from writing a letter that sounds like a complaint letter.