Dear Maria,
Happy Birthday ! I am writing this letter to express my sincere apologise that I couldn’t attend your birthday party which was in last Friday. Moreover, I also extremly sorry about that I also forgot to wish you on your special day.
Actually, on your birthday I had my semester final exam and you obiously know that how crucial it is for me. So, the day before your birthday I was really busy and panicked with my studies and for that reason I couldn’t manage any time for my personal work either. As a result, I also forgot about your birthday and couldn’t wish you! And the next day, as I have my exam, so I couldn’t manage time come at your place and celebrate your day.
However, my exam will be finish in next Tuesday evening, so why don’t we meet next wednesday to celebrate your birthday together! Maybe we can cut a cake and have some dinner together if you want! Please let me know if your available on that day. I am waiting for your response.
I am truely sorry for missing your special day, please accept my sincere apology.
Best wishes,
Nishat
