yesno

$message = $site_collection_url + " " + "Is this URL is correct, and do you wish to continue"

$yes = New-Object System.Management.Automation.Host.ChoiceDescription "&Yes", `
    "Builds and Permissions the new site collection $site_collection_url"
$no = New-Object System.Management.Automation.Host.ChoiceDescription "&No", `
    "Ends the script and does not build the new site collection."
$options = [System.Management.Automation.Host.ChoiceDescription[]]($yes, $no)
$result = $host.ui.PromptForChoice($title, $message, $options, 0)
switch ($result)
    {
        0 {"You selected Yes."}
        1 {"You selected No."}
    }
if ($result = 0)
    {
         {break}
    }