Our school is giving out carnations?

My school, over the past week, has been selling flower orders that you can send out to people around the school. Now I have an 80% feeling that I will be receiving one from this one girl. The girl is pretty atTRACKtive <-- (she's the fastest sprinter on the track team (little joke for you guys)) and she seems real cool. When I receive it (if i do), what should i say to her? What would be some good ideas?