Remember that to say thank you in Norwegian, you say takk.
To say please in Norweian is Vær så snill - vah-r-sah-snee-l.
And to say you're welcome, you say Værsågod - vah-r-sah-goo-d.
(from: wikipedia - norwegian language)
Greek: Παρακαλώ (Parakaló)
ASL: Please, You're Welcome
German: bitte, bitte schön
Spanish: Por favor, de nada
French: s'il vous plait, de rien