Create Exception Report: Vendor Bills with no attachments

Hello All,

I'm looking to build an "Exception report," of sorts. I would like it to show me all of the bills that have been created during a period of time, but do not have a file attachment under the "Communication" tab. My Accounts Payable processor sometimes forgets to attach a copy of the invoice or other support/back-up to a vendor bill. Rather than look at each bill they did in a day, is there a way to build an "Exception Report." Something that will show me all vendor bills created in a week, but don't have an attachment?