I ahve a small issue when Im designing my use case diagram

I have one use case called "View Message", buth actors can view messages


Then I have another use case "view message details", and only one of the actors can do this.

And another use case which is "administrate message"(delete, update, create), which olso only one actor can do...


what is the relationship between these three use cases? Do they extend or include???


kind regards
Henrik