Travelers simply forward their purchase confirmation emails to TripIt and TripIt automatically creates master itineraries with travel plans and other critical information.
If you still think the purchase is worthwhile the next day, then go forward with the purchase.
如果第二天你仍然认为这次购买时值得的，那么去买下它。
3
Former researchers have already brought forward many valuable models of audience's response on how advertisement influences the purchase decision of the consumers.