哪位英语大侠帮我写一篇英文道歉信呀？（请不要用翻译器，谢谢）

Question

内容是：本来打算去参加一个聚会，但是由于家里来了客人去不了了，所以写封信道歉。(人物的人称随意）
先在这里谢了

Answer 1

Dear Tom,

I am sorry to inform you that i wouldn't be able to attend your birthday party this weekend. My cousins came to visit me today and they intend to stay over the weekend. I am afraid that I will have to accompany them to go around the city as this is the first time they came and wouldn't be here for another year or so.

I have prepared a birthday present for you and already asked Mary to bring to you on the day. I hope you will like it and wish you a very happy birthday in advance.

Thank you very much for your kind understanding.

Yours Sincerely,
Jerry追问

英文日期能给加上么？6月16日

追答

Jun.16th

Dear Tom,

I am sorry to inform you that i wouldn't be able to attend your birthday party this weekend. My cousins came to visit me today and they intend to stay over the weekend. I am afraid that I will have to accompany them to go around the city as this is the first time they came and wouldn't be here for another year or so.

I have prepared a birthday present for you and already asked Mary to bring to you on the day. I hope you will like it and wish you a very happy birthday in advance.

Thank you very much for your kind understanding.

Yours Sincerely,
Jerry