Remember that to say thank you in Spanish, you say gracias.
To say please in Spanish is por favor.
It sounds like poh-d fah voh-d /?/.
And to say you're welcome, you say de nada and it sounds like day nah-dah /?/.
(from: wikipedia - Association of Spanish Language Academies)
Do you remember how to say it in French?
S'il vous plait, de rien