Dear linda,
I am excessively sorry to say that i had failed to keep the appointment that we made last friday. now, i am writing you this letter of apology to show my deep regret. please accept my sincere apology. i hope you will understand me and excuse me for my failure to turn up.
the reason for my absence was that my mother fell ill at that time. i had no way out because i had to send her to hospital and look after her. therefore, it’s not in my power to meet you.
naturally, i want to suggest that we should make another appointment next time.， i shall be obliged if you will kindly write and tell me when and where you will be at convenience.
we may meet again and i hope to see you soon.
yours sincerely,
li ming