按要求编写一段英文对话.
问题描述：
按要求编写一段英文对话.
Mary拾到一本英汉词典,她问Tom是否是他的,Tom说不是,并认为是Helen的,Mary询问Helen后确定是她的,于是将词典还给了Helen,请按提示编写一段英文对话,字数40字左右.
答
(Mary finds an English--Chinese dictionary and now she is asking Tom)
Mary: Is this dictionary yours,Tom?
Tom:No,it isn"t.I think it is Helen",you can ask her.
Mary：OK .(Turns to Helen.) Helen ,is this your dictionary?
Helen:Oh,yes,it"s mine.
Mary：Here you are.
Helen:Thanks.
Mary: You are welcome.