Sick Summer

Over the weekend she was in Chelmsford, MA at her doctors office.  Her and her son got on the elevator when a guy walked in with his two daughters.  The guy was very nice, they chatted, and talked about both their kids being sick.  She never got his number but did see he wasn't wearing a wedding ring.  He had two daughters, drove a black Super Duty Truck, and had a vanity plate.  Does this ring a bell??