Two recent examples. I phoned my daughter, and her small son answered the phone.
Me: Hello, Max. Is Mummy there?
Long pause while I wait for me daughter, then:
Max (still there): Yes?
Me: Could I speak to her, please?
And off he went to fetch her. Because, of course, I hadn't asked to speak to her; I'd only asked if she was there. And he'd answered my question and was (presumably) politely waiting for the next one.
Second example. We had two grandsons, aged 8 and 9, staying over half-term. I asked them to go and run their bath, and I would be up in a minute. Off they went. But when I went to check, they had certainly run the bath - gallons of hot water were pouring in - but I hadn't asked them to put the plug in, so the bath was empty.
I shall know better next time.