Tolong tuliskan percakapan tentang to invite someone to do something,to give instructions dan to ask for permission?

Rani: Can you help me clean the class, please?
Tanu: Sure!I can help you if you want!
Rani: thanks, Tanu!
Tina: By the way, I need help to do my exercise. Can someone help me?
Rani: Sure! How can I help?
Tina: This one. Can you help me?
Rani: Sure. I will help you.
Dono: Tina, can I go to the toilet please?
Tina: Sure, next time you don't need to ask permission like this cause you can go whenever you want!
Dono: thanks, Tina!