Letter to librarian informing the loss of a library book

Dear Sir,

I am sorry to inform you that on my way to college yesterday I have lost the book titled Child Psychology by Dr. S. C. Saxena. I had got this book issued last week. I am willing either to replace the book or pay its cost with fine.

I would be grateful to you if your good self could let me know your decision in this regard so that I can comply with it at the earliest.

Thanking you.

Yours sincerely,