The arrow is a bit blurry, anyways it acts as a “CONTINUE” button for next dialogue (you get it)
The rectangle box is the Dialogue Text and above it is the name of whoever we are interacting with.
Here is my choices box for when a player is responding: ( i haven’t updated this to match the rest of the gui, but let me show you anyway )
Not bad but I find the arrow to be quite wide… I also find the name frame to be a bit weird as it doesn’t mattch the rest of the elements. Try rotating it’s background pattern to match the rest and also show it’s border rather than hiding it under the dialog frame.