Hi Maryna,
Thanks very much for your note, it's very kind of you to invite me to your Valentine's Day party, but I'm afraid I won't be able to come. My granny is 75 on Saturday, and we're going to have a big family reunion on that day. It's too bad, because I love the parties you organize
Anyway, I hope you'll have a great day!
See you soon.
Sasha