My favourite ponies are Fluttershy and Rainbow Dash, so screw it, I'll add a quote for both of them.
@Fluttershy: Thanks for being so cute! Also, don't worry, you've really progressed at standing up for yourself and you've grown into a fine young mare since that day at flight school, no matter what other ponies think.
@Rainbow Dash: Hey sport, congrats on getting into the Wonderbolts, it took you a long time but you did it in the end and I'm happy for you. Keep being 20% cooler!
Add that one to the friendship journal...
That's violating the rules! Nah, jk, I get it, Equestria is too much to resist...
Awwww, I bet they'd be really touched.