Formal:
* Mahalo: This is the most common and respectful response, especially when addressing someone older or in a position of authority.
* Mahalo nui loa: This translates to "Thank you very much" and is more formal than just "Mahalo."
Informal:
* E komo mai: This means "Welcome" and is a good way to respond when someone thanks you for something you've done.
* No problem: This is a more casual and informal response.
* You're welcome: While this is a common response in English, it's less common in Hawaiian.
Other options:
* A hui hou: This means "Until we meet again" and is a nice way to end a conversation.
* Aloha: This is a general greeting and means "hello" or "goodbye" depending on the context.
Important note: It's always polite to respond to "mahalo" with a smile and a nod or gesture of acknowledgment.
Ultimately, the best way to respond to "mahalo" is to choose an option that feels appropriate for the situation and your relationship with the speaker.