A: Do you know how to use this printer?
B: Um … I’m not sure … I think if you press this button here … oops, no, that’s not it …
A: Oh, well, don’t worry …
A: Can you help me with laptop?
B: Sure, what do you need?
A: I’m just trying to turn it on.
B: Hmm … let’s see … you probably need to press this button here.
A: How does this smartphone work? I want to access my message. Is it this button here?
B: Um … I guess so ... oh, it looks a little difference from mine …
A: I’ve tried this button, but nothing happened.
B: Oh. I see. Maybe you could try this one …