Comparing data in worksheets

Registration date
Wednesday March 8, 2017
Last seen
March 8, 2017
I have 2 worksheets in the same workbook; both are set up exactly the same with each having the same header row. I want to compare the last name cells in Column B and the DOB in Column C of sheet 2016 to those in Sheet 2017. If both the (last name & DOB for a row) are equal to any row in Sheet 2017 I would like to copy the data from the matching row of sheet 2017 on an additional sheet called Second Time Buyer. How can I do this with a macro?