Formatting bold text in EditorUtility.DisplayDialog

So I'm going through the BergZerg Arcade item system tutorials to better help me get a handle on using a list as a ScriptableObject database. I'm following the core tutorials themselves fine, but in video 6 while coding the display dialog for deleting database items, he almost makes some text bold, then suggests we do it. I thought it would be handy to understand the formatting for that, so I decided to try it. Unfortunately, I can't seem to find a way to make it happen, as EditorUtility.DisplayDialog doesn't seem to have a constructor overload that accepts a GUIStyle, which is currently my only knowledge of how to achieve text formatting.

The code is as follows:

 EditorUtility.DisplayDialog("Delete Quality", "Are you sure you want to delete " + quality.Get(cnt).QualityTypeName + "?", "Confirm", "Cancel");

I'd like the word delete in the first string to be bold. I can't seem to find any type of formatting that will allow for this in the code as it is. I'm fairly sure I could pull it out, apply a GUIStyle to it in a separate variable, and then concatenate that variable into the string, but I'm wondering if there's a trick to doing it without the extra code.