A:There will beno chargeatall.However, you mustshowus thereceipt. (Thecashierishanding the receiptovertoBfor him tosign.) Could yousignithere,please? B:Thankyou. A:All right.Keepyourreceipt. If somethingcomes up, you canshowit to us and we'llgiveyou arefund. B:Thanks. I'll put it i...