I don't like it when the reader starts by asking "how are you doing today?" If I am fine, I won't be calling. If I say "not so good", or more, that already tell them something. I prefer readers who say "how can I help you today".
I hate it most when the reader ask "when was the last time the two of you spoke?" Boy, the answer will tell them ALOT!
I also figure out this one works 95% of the time for readers: " I sense distance". When I didn't know better, I would get all excited and thought the reader was God.
If we called enough times, seriously, we can be readers too. I think predictions is the part that tells the reader is psychic or not.