In B4 :
Code:
=SUMPRODUCT((Sheet2!$A$2:$A$7=Sheet1!B$2)*(Sheet2!$B$2:$B$7=Sheet1!B$3)*(Sheet2!$C$2:$C$7))
drag right and down ( only for row 5)
In B6 :
Code:
=INDEX(Sheet2!$E$1:$E$7,(SUMPRODUCT((Sheet2!$A$1:$A$7=Sheet1!B$2)*(Sheet2!$B$1:$B$7=Sheet1!B$3)*ROW(Sheet2!$E$1:$E$7))))
and drag right