Writing a letter to your friends tell him or her to come and celebrate the annual festival with you

Dear Mike,

I hope this letter finds you well. I haven't heard from you for six months, and how is everything going? As we have graduated from the university for almost ten years, I think we should hold a celebration in our university next month, as we discussed last time.

I remember that you were looking forward to meet our classmates again and I think this is a best chance to reunion. I suggest that we should go back to the university and throw a party there on July 30, when we left school on that date ten years ago. As I already contacted the school, we can rent a classroom for one day to hold a party. Can you help me to invite all the students in your class? As students in my class were very close to yours, they will be happy to see you guys there.

We can discuss more details after your confirmation because I need to know how many people will be catered. I can't wait to hear from you.

Yours truly
your name

Good luck !