在意铁上买了两张票，没有注册，其中一人的邮

If you have lost or forgotten your payment receipt or the PNR code, you will be considered as being without a ticket and thus have to pay for one ticket. http://www.trenitalia.com/cms/v/index.jsp?vgnextoid=6e20eb82a8fbf310VgnVCM1000008916f90aRCRD

没有太理解，如果是两个人分别用两个邮箱买了两张票，那就找不回了。

那就等于票丢失了。另外再买一张。

基本找不到。