Im pretty sure the new kiosks are capable hardware wise of doing a video connection with an agent. Not sure the feature has actually been implemented but I believe with the machines they put in it’s supported. They are at most large major stations and intermediate medium sized stations on the NEC have them too. Some state corridors have them at more stops than just the big ones - they’re typically at stations that see a few trains a day or more. I saw them the other day at Chicago. My home station (Springfield MA) has one and I know I saw a few at Moynihan the last time I was there and I know New Haven has one. I was in LA back in November and I’m pretty sure I saw one or two of them there.