Dear Anna,
very glad to get your letter. Sorry I didn't reply sooner.
This summer me and my family a lot of plans. In June I will go to sports camp with my friend. In July we want to go with his brother in the village to the grandmother. There is just ripen berries! And in August, before school, to go to Italy! Italy-mother's dream.
I hope that we with you soon will see you.
With best wishes,
(свое имя напиши).