I have noticed that it is unusual for people to go out of their way to help an older person. Such as, when an older man is in a wheel chair and he is having to wheel himself around the check outs while he is also on oxygen, to go to the rest room. I know everyone have their own concerns, but it is no secret that these elderly gents and ladies would not forget the compassion you show them! Especially when it is obvious they need help, back in my day it was taught to help them. Open the door, "can I help you", etc.