Answer:
Step-by-step explanation:
Dear [Friend's Name],
I hope this letter finds you well. I wanted to reach out to you and apologize for not being able to attend your birthday party last week. I know how much effort you put into organizing it, and I feel terrible for not being there to celebrate with you.
Unfortunately, something unexpected came up at the last minute, and I had to attend to it urgently. As much as I wanted to be there, it was beyond my control, and I had to prioritize the matter at hand. I am sorry if this caused any inconvenience or disappointment on your part.
I hope that you had a wonderful time at the party, and that you were surrounded by people who love and care for you. I feel bad for missing out on the celebrations, and I would have loved to share the moment with you.
In the meantime, I would like to make it up to you by taking you out for lunch or dinner sometime this week. We can catch up on what happened at the party, and I can give you your birthday gift in person.
Once again, I apologize for not being able to attend your birthday party, and I hope you can forgive me. I am looking forward to seeing you soon.
Best regards,
[Your Name]