Report showing Booked Assets from Calendar

I was wondering if a report could be developed in the report builder that would be able to show Booked Assets entries that are placed in the aXc calendar. We enter items as booked assets for our trainers when they are doing work that is not a workshop. An example would be Trainer Development, RDO's or Travel.  This would be really useful when looking at trainer utilisation when the item is not workshop related, these activities help with the bigger picture of the trainers utilisation hours and activities.