Dear uncle,
I hope you are doing well. I am really sorry that i forgot to pick you up from airport last week. I am writing this letter to explain what happed with me and why that happened.
Month ago my father has already informed me that you are going to visit us during your vacation. However, last month my company got big and very important project. Also my role for this project was crucial. Every day I was doing overtime as well as some night i never slept. Due to this and stress I completly let slip about to take you from airport.
I owe you an apology for causing this inconvenience and puting you in trouble. I know, i wasted your time. But can you please accept my apology, and this would never repeated in future.
To make sure we are coming to your place to enjoy diwali and new year for complete one month. No office drama will happens again.
Your favourite niece,
max
