Dear Tom (выбери любое понравившееся имя),
Hi! I'm writing to tell you that I have a birthday party.
I'd like to get a puppy.
I'll call him (любое имя)
I will take care of him, go for a walk with him and love him.
When my friends come to my place, the party'll begin and we'll have fun.
We also can dance and sing in karaoke.
It'll be so fun!
What about your birthday? What would you like to get?
I hope, you'll answer me soon.
Best wishes,
Masha.