S.Hi! Can I help You?
K.Yes...hmm I need bands on the knee
S.Well!. What size?
S.I am sorry I have no bands of this size...
K.Ohh no.I what about now?
S.You can buy a wristband for one size smaller...
K.But this wristband will be too small
S.You can try...
S.Now I give you this wristband
K.Oh no, this band is too small
S.I'll give you a size larger.Ok?
K.No thanks..I will go to next shop