Flew ORD LAX on AA on 8/8. A couple and their (grand?)child were scattered throughout economy as they had been re-booked due to a delayed connection. FA asked the first person who said no, approached the second who happily moved (13B - bulkhead C a few rows up both aisles so guess he was OK). Mother and son now in front of me and father in 7 or 8 C. Kept coming back to talk to the son who was a little nervous so I offered to switch from 14B to his seat. I didn't mind moving and it would have meant more quiet for me since the kid was chatty. Father gratefully accepted *and* offered me $50. I didn't take it but I thought that was a nice gesture.