영수증 is receipt. and today you can receive receipt after pay something. but a times ago, most of store in korea usually does not use receipt. so if need receipt, asking it. at that time use this. 영수증 주세요. or 영수증 끊어주세요. then staff of store take out book that printed receipt form, then tear one page of it, write price and so on. > http://www.fotosearch.co.kr/CSP024/k0243012/ so when you can listening 영수증을 끊어드릴까요? you must buy something, and the store is not prepare receipt usual. And these days, still receipt is print out from machine, and tear part of paper. So 영수증을 끊어드릴까요? is still remain, and using.