Happy!

cheerful - showing you are happy: a cheerful smile;
contented - satisfied and happy: He sat looking contented after the meal;
delighted - very pleased and happy: I'm delighted to see you;
elated - happy because you have been succesful: We left the stadium elated by our team's victory;
glad - pleased and happy: I'm glad you came;
pleased - happy and satisfied: He's pleased with your work;
thrilled - very happy and excited: I was thrilled to see her.