"If you need anything, you can call me, sir," The attendant said in a professional and concerned manner while looking at Noah.
But before Noah could answer anything, Robert believed the attendant was talking to him like that and responded with a little arrogance, "Yes, I'll let you know."
Noah looked at Robert, who didn't even notice that the attendant's eyes and speech were directed at Noah and not himself, and just shook his head. Noah looked at the attendant who proceeded to ignore Robert and continue to stare at him, waiting for an answer, and so Noah nodded positively, immediately after which the attendant turned and left.
Robert was not looking at either of them, so he didn't notice this exchange that had taken place, and Noah didn't bother to explain.