Pay it forward

I work at a restaurant and today there were two separate couples sitting near each other. One couple finished and came up to pay and the lady said she wanted to pay for the other couples meal. She didn't know them she just wanted to pay for them. When I went and told the couple still eating that their meal had been paid for they were in complete shock. The lady informed me that it was a blessing because she has cancer and just got back from the doctor. She has several medical bills and is truly grateful for the unknown couple that had just paid for their meal.