Quite simple, im sure I should know the answer to this, but I cant put my finger on it

I have this so far:



Dim response As Integer

Private Sub Command9_Click()
response = MsgBox("Are you sure you want to quit?", vbQuestion + vbYesNo)
If response = vbYes Then
End
Else
End If

End Sub



So far all it does it close the message box whatever I press, I know that the 'end' is wrong, but am not sure what to change it to. I just want 'no' to go back to the form and 'Yes' to quit the application. (I am using Access with VBA)