I really appreciate you asking this question. As a PWS I find it really difficult to say my name and the way people react to it can really have an effect on me (good or bad). I think that the most helpful thing to do in these situations is to not react- at least initially. By this I mean avoid making a confused face or leaning in as if you're trying to listen. These things can add a feeling of pressure on the speaker. I can usually get my name out within 10 seconds if I don't feel rushed. If the PWS says something like "sorry" or "it's hard for me to say" when they block their name, a good response would be something like "that's alright" or "no worries". If you see that they are completely blocked or distressed you should let them know that it's okay if they need to write it down or spell it out. Patience and understanding are the most important things to express. My worst experience was back in high school with a substitute teacher. I sat in the very back of this really long classroom and from the front he yells out "You in the back, what's your name? As I was trying to force it out he says "Can you hear me?...Son, can you tell me your name?". By this point the whole class was looking at me. I froze up so bad that there was no way I could say anything at this point. Eventually one of my classmates had to say it for me and I was so embarrassed I wanted to leave. You shouldn't feel bad for asking someone their name. Just try to make sure it's a comfortable situation, like a one on one conversation.