Lie to me

Cust: can I have a fitting?
EM: it's going to be in about forty minutes, so about ten to three...
Cust: oh... Is there nothing sooner?
EM: no, thats the next time the fitters are free again
Cust: you only have one fitter?
EM: no, we have three but they're all in fittings
Cust: oh, your pretty busy then, I'll put my name down for that one... Do they all fit the same?
EM: do... Do what fit the same?
Cust: the bras
EM: no, that's why we allocate twenty minutes per fitting as we don't just sling a tape measure round you we fit each bra individually to you
Cust: yes...
EM: so if I just take your first name
Cust: (gives name)
EM: and have you been fitted by us before?
Cust: no... Actually that's a lie, I've been fitted for a swim suit. The fitter said that I would need a different size...
EM: yes, but the principle is still the same...
Cust: ok, good, what time was that again?
EM: ten to three