Write a letter to your friend inviting him/her to take part in your birthday party?

Dear ...... (tên người bạn), 

How are you doing? It's been a long time since we last met each other. Because next weekend is my birthday I going to have a small party at my house and I hope that you can come. It will be on the 31st of December. I also invite our classmate to come too. The party starts at 6 pm and ends around 8 pm. We can go for a coffee after if you want. Hope to see your reply soon!

Best friend,

................ (tên bạn)