Dear Mr and Mrs Collins,
I hope you are well both of you. Thank you for invited me to your son’s birthday party. I feel gratefull to hear that.
In his sweet seventeen day, i think it will make him happy. Because several days ago he hopes to make birthday party with close friends.
I am happy too but at same time i just feeling guilty and sorry, i do not able to the party because i have to work in out of city at that day and exactly i can not leave my job. My boss give me more opportunity to develop the project that i am handling.
After i finished my job, i promise to meet chris and give him some present for his birth day altough that is too late. In addition, i have a lot of plan with him, like traveling outside, watching movie at cinema or just fun dining in new restaurant around the city.