[1] Dynamic packages differ from traditional package tours in that the pricing is always based on current availability, escorted group tours are rarely included, and trip-specific add-ons such as airport parking and show tickets are often available.
True dynamic packaging demands the automated recombination of travel components based on the inclusion of rules that not only dictate the content of the package but also conditional pricing rules based on various conditions such as the trip characteristics, suppliers contributing components, the channel of distribution, and terms of sale.
Dynamic packages are normally given a single, opaque price, meaning the wholesaler's cost of the individual components is hidden from the consumer.
This is to "train" the consumers to book early, making it easier for the airline to do proper revenue management.
If airlines were to dump their fares if a flight failed to fill up, then this would train the customers to wait until very close to departure before booking.
Without an inventory management system, and a ticket, coupon or voucher issuing system to make the prices of the individual components appear as one price to the consumer and allow each travel service provider to know what rate to accept or charge the traveler; dynamic packaging does not work.
For packages that include flights, the outbound arrival and return departure date/times determine the car rental pick-up and drop-off date/times.