OPTION #1
SL: One breadstick is never enough.
PH: It's National Breadstick Day! Celebrate with us and our always unlimited breadsticks.
OPTION #2
SL: [FIRST_NAME], breadstick obsessed?
PH: Today is your day—it's National Breadstick Day!
OPTION #3
SL: [FIRST_NAME], can't get enough of our breadsticks?
PH: Neither can we! Join us for National Breadstick Day!