recline a birthday partyvfor aclose friend

To my closest and best friend, dear Mohammad Hi, what's up, bro? Long time no see! I suppose that It's a blessing that you are my honest and confidant friend. I am always obsessed with you sincerely. Candidly, I would be really grateful that you invite me for your birthday party, and I am delighted wholeheartedly for this. Unfortunately I want to say that I won't be able to participate in this great event. Hope that you would forgive me for this matter. To tell you the truth, I must travel to abroad for an occupational mission on scheduled time. Although, I wish I could be able to participate at this significant occasion and celebrate together. I am sure that we could have been created pure and memorable moments beside each other. It's on me to arrange to visit you at a decent time in the near future, in order to compensate for this excuse. By the way, I consider buying an amazing gift in overseas for your belated birthday feast. In advance, I want to offer my best and sincere wishes to you; I wish that you be indulged with health, wealth, happiness, and prosperity. May all of your aspirations and dramas come into reality. God bless you. You're faithfully