[The pride on his face is unmistakable as he rises back onto his feet, the smugness he feels is absolutely obnoxious.]

I only give my best for--

[..."you" is what he normally would say. To his master. "I only give my best for you." What was once smug and full of pride is suddenly tinged with a hint of sadness as he corrects himself.]

I only give my best.

[It's stated more matter-of-factly and not at all as triumphant as he was in the beginning, ending it all by clearing his throat. Right. Anyway, moving on.]

...you need to be more aware of your surroundings while you're sleeping. Even now, you were completely unaware of my presence before I announced myself. I could've easily attacked you.

[It's a...very Hakai way of saying "Don't worry about it."]