Recently I did my weekly grocery shop quite late on a Friday night. Many shoppers were going through the self-checkout area with just a few items, but for those of us with full trolleys, there was only one checkout open, and quite a queue. I noticed the woman in front of me was smiling despite the wait, and when it came to her turn, she chatted with the checkout operator, making her smile too. They both then turned to me and asked whether I had a loyalty card. The woman in front of me had left hers at home and was offering to add her earned points to my card. I gladly accepted, and soon all three of us were smiling.
