If I turn out to an obvious waste of time shout, I ask the "customer" - "So what part of this is an accident or an emergency then?" More often than not, they have a little think to themselves & decline transport. I always give them the option of being taken in by ambulance but explain that it would probably be better for a GP to visit or for them to make their own way. I have been doing this for the past 4 years or so without any complaints. When there is any doubt in my mind at all, or they absolutely insist that they must go, they travel with me, no questions asked & I explain the situation during handover