Connect Work orders to Invoices based on date proximity

sayaliredij 

Thanks for the response.  I might have used the wrong terminology in my request.  Once the Work Order is submitted, it takes a few days for an Invoice to be generated (so the WO and INV do not show the same date).  What I'd like to do is create a visual that shows the Customer ID, their Work Orders and the corresponding Invoice for each WO.  but each customer has multiple WO's and Invoices - all on varius dates.  I need a way to determine which Invoice goes with which WO based on the proximity of the dates submitted.  

Examples...

Work Order Table

Invoice Table

Combined Data