"I am Andi."
I am a little disappointed with the constant change of informal and formal forms. You is translated to kamu (informal) and I is translated to saya (formal). Would be more coherent to stick to ine form wouldn't it? Saya - Anda (I - You, formal) or Aku - Kamu (I - You, informal)
Saya and aku is both formal and informal. So it should be used interchangeably