Change as many yes-no-dialogs or yes-no-cancel-dialogs to something meaningful as possible. Yes-No choices are very user unfriendly. The user has to read the whole text to be sure which button to select. Many people tend to just select "yes" without reading. Buttons should have meaningful labels which describe what they do.
Maybe best Example: I had to read the yes-no dialog popping up in OpenOffice when saving a file not in ODF at least 3 times before I knew which button to chose. If they would have been labeled e.g. "OpenDocument Text" and "Plain Text" (or ".odt" and ".txt") I would have known without reading and the dialog text would be shorter by 2/3. (This particular case seems to be fixed already https://bugs.edge.launchpad.net/bugs/54784)
This is already being discussed in https:/