I don't think it's necessary for a first-time booking but I have gotten flirty with some repeat sps on subsequent bookings and I think that can be fun. The one thing I think isn't asked enough on initial booking is what the client is looking for out of their time. I know it adds time/messages but it's great for setting expectations on both sides (also, re-affirming restrictions, finding out what the sp likes, and creating anticipation for the session). Every time I've been asked that we each found out something helpful for our time together and it minimized some of those awkward moments.