To equal acquaintance : Old friends (informal)

Example:

hai, mau kemana? Or,

hai, dari mana? (Where are you going/where have you been)

This question can either become rhetorical questions that need not to be answered in clear way which
function as only chit-chat greeting, or a way to ask the addressee to have a chat.

Newly met acquaintance (formal)

Hai, aku Zoura, kamu/anda siapa? (hi, I’m Zoura, and you?)

This is a way for us to get acquainted with the person we’ve just met, but restricted in only equal

environment: school or university.

Some Examples of Greetings in Indonesian