Coincidence?

I just had a rather strange experience at Waterloo. There I was buying
my Economist at the small W H Smith by Platform 4 (where I don't
normally go). I walk up to the man at the checkout who makes some joke
about me being a keen economist (HA HA) and then says "So Jae, what
have you got planned this weekend?".

How does he know my name??? Obviously being British I didn't ask
him... But WEIRD!

Getting 1) excited about Thailand trip 2) stressed by amount of stuff
to do this weekend and 3) worried about my money situation in
Thailand...

So pretty much business as usual in the world of Jae... except for
that man at W H Smiths...