title: zenity dialog window with two buttons but no text entry
body: <p>I would like to create a zenity dialog window with two buttons as only user input.</p>
  
  <p>The following creates a window with two buttons but with a space for a text entry</p>
  
  <pre><code>zenity --entry --title="" --text "Choose A or B" --ok-label="B" --cancel-label="A"
  </code></pre>
  
  <p>The following creates a window with one button only</p>
  
  <pre><code>zenity --info --title="" --text "Choose A or B" --ok-label="B"
  </code></pre>