Dear Sir or Madam
I am writing to offer my sincere apologies for not returning the books I borrowed from the university library on time. Unfortunately, I have been dealing with unforeseen personal circumstances, which led to the delay.
I deeply regret any inconvenience this has caused to the library and other students who may need the books. I take full responsibility for this oversight and assure you that it was not intentional.
I will return the books immediately and am prepared to pay any fines associated with the late return. Please let me know if there is any additional action I need to take to make up for the inconvenience.
Once again, I am truly sorry for the delay and appreciate your understanding.
Yours faithfully,
Lily Brown
