Help with returns Dax scenario

Hi,

I have a

Date table - Full Date & Season Code

Sales Table - order number  & order date

Returns Table - order number & return date & return reason

I am wanting to count the number of orders that have a return with specific reason lost in transit with season code 'aw20'

So the date in the returns table isnt relevent the join is between

Sales.orderdate and Date.fulldate  

Sales.ordernumber and Returns.OrderNumber

I guess the question is in powerbi how do I only pull the back the orders placed in a specific timeperiod with returns?

Thanks in Advance.