We just learned some greetings in Hindi, like नमस्ते (namaste) and अलविदा (alavida) and शुभ प्रभात (shubh prabhaat), नमस्कार (namaskaar), सुसंध्या (susandhya), शुभ रात्रि (shubh raatri).
How are you? in Hindi:
आप कैसे हैं? (aap kaise hain?) - sounds like ah-p kay-see hay-in 文A
To respond and say Very good thanks, you would say:
बहुत अच्छा धन्यवाद। (bahut achchha dhanyavaad) - sounds like bah-hut ah-chah dah-n-yay-vah-d 文A

(from: wikipedia - devanagari)
Swahili: Hujambo, Unakuwaje, Sijambo asante, Safi asante
Russian: Как дела? (kak dela), Спасибо Хорошо (Spasibo khorosho)
Norwegian: Hvordan har du det? Veldig bra takk.
Greek: Γειά σου (Geiá sou), Χαίρετε (Chairete), Αντίο (Antío), Καλημέρα (Kaliméra), Καλησπέρα (Kalispéra), Καληνυχτα - (Kalinychta)
ASL: How are you?
Italian: Come va? Molto bene, grazie.
German: Wie geht es Ihnen? Sehr gut, danke.
Spanish: ¿Cómo estás? Muy bien, gracias.
French: Comment allez-vous? Très bien, merci.