YEG-YYZ-DCA
In Economy, first row after "first" a woman approaches me (I seat in the aisle, she is on the aisle on the other side of the row).
"Can you switch with my husband? he seats at the last row."
I declined and went to sleep.
On the 2nd leg, YYZ-DCA: I am the last one to board the plane, that women from the first leg, is in front of me. I am booked at Economy, approaching my seat, on the 2-seats next to me, seating the 2 kids of that women, she was assigned to seat in "First" apparently, but was looking to switch with someone so she can seat next to her kids. I accepted and went to seat 1A. Karma, is confirmed a beach.