Travel Packages Purchased from Internet Vendors 
Travel "packages" offered by Internet vendors typically do not include itemized expenses. Therefore, no business-related travel should be booked through such vendors unless the traveler has confirmed that each aspect of the package will be separately itemized (e.g., itemized hotel charges, airfare, car rental, etc.) to assure appropriate documentation for reimbursement. 

Complete travel policy can be found at http://travel.ucdavis.edu/policy/UC-FO-12-0028_G28_Travel_March2013.pdf 

As you make plans to book for any upcoming trips be sure you do not utilize this type of booking option unless you can obtain a fully itemized receipt from the vendor.