This letter thanks someone for including you in an activity or outing.
1234, Main Street
Boston, MA 02123
07 April, 2005
<Recipient Address Goes Here>
I wanted to let you know how much it meant to me that you included me in your <activity>. I had a lovely time with <people you were with> and felt right at home. I always enjoy the time I spend with special people like you and was especially flattered that you thought to include me at the <generic description>. Thank you again for letting me join you for such a wonderful time.
encl: <List of enclosed items goes here>