I work on a checkout and make an effort to chat to my elderly customers (I never shut up me, chat away all day to everyone) and to smile a LOT, it makes such a difference I’ve seen people brighten up. Also, as I’ve told colleagues, that conversation you have with an elderly customer, that might be the only chat they have that day. Many of them live alone, having lost partners etc. Remember we’ll all be elderly one day. I have some lovely regulars who make a point of coming to whichever checkout I’m on and that makes me feel great too :-) hugs xx