My applescript code won't work

This code will run and it is a shortcut. Obviously I customized three buttons and then gave a conditional statement for each response but while button 1 and 2 work button 3 runs but Safari will not open a new page. What did I do wrong?

set goodForum to "http://hints.macworld.com/article.php?story=20030409015020645"

set googleUrl to "https://www.google.com"

try

display dialog "Go to forum to study hidden files?" with title "SAUCE" buttons {"Go", "Don't go", "Go to google"}

if button returned of result is "Go" then

tell application "Safari" to makenewdocumentwith properties {URL:goodForum}

end if

if button returned of result is "Don't go to this page" then

"Cancel"

end if

if button returned of result is "Go to google" then

tell application "Safari" to makenewdocumentwith properties {URL:googleUrl}

end if

end try

Thanks in advance