Interception: Let someone ahead of you in line

I was at the grocery store the other day with a couple items and got in line behind a woman with a fairly full cart. She immediately said I could go ahead although she had already started putting her items on the check out line. I thought about it for a few minutes and realized I was not in a hurry and was in fact enjoying the moment of just waiting so I told her to go ahead and finish up. It turned out to be a moment of kindness from and for us both.