IworkattheFriendshipBookstoreonDongfangRoadwhereyouoftencometobuybooks.TheotherdaywhenyouboughtadictionaryatourbookstoreImadeamistakeabuttheprice.Youlookedattwodifferenteditionsofthesamedictionary,onecosting30yuanandtheother21yuan.Youtookthe21-yuanbutIaccepted30yuanfromyou.Ididn'tfindoutmymistakeuntilyouhadleft.Willyoupleasecometothebookstoretogetyourchangeortoreturnyourdictionaryandgeta30-yuaneditioninstead?Iapologizeforwhatevertroublethisiscausingyou.
Yourstruly
LiHua