Dear Lam,

You probably already know that next week will be my birthday, and I'm excited to invite you and other classmates to a little birthday party at my house. I wonder would you have any free time to join us at 7 pm this Saturday? Everyone will be there, so you can dress well. Besides, can you help me with a little favor? I'm a little confused about what to decorate for that day, so it would be great if you could give me some advice on this. It will be an extremely enjoyable occasion, so try not to be late or you will miss a special welcome at the entrance. My mom is going to cook some delicious food and cream cake too. We also prepare some souvenirs, so you can bring back some lovely gifts if you do your best. This is my 18th birthday so I put a lot of heart into it, and I hope you will have a great time at the party.

Please reply to my letter as soon as possible.

I hope to hear from you soon.

Your friend