segue to next ViewController and pass data if condition is valid

I am trying to segue from first viewcontroller to the second one and pass the value of var dateAndTime = NSDate() to the second view controller.

My first approach was to segue from the first viewcontroller itself to the second one, define the name of the segue in Attributes inspector. Next, I link a button @IBAction func nextButtonToFifthViewController in the first viewcontroller, use an if else statement and prepareForSegue, but the code does not compile because I am not allowed to override prepareForSegue.

@IBAction func nextButtonToFifthViewController(sender: AnyObject) {
    if timeRestricted.contains(hourComponents){
        self.label.text = "Please choose a time betwen 7:00 - 19:00"
    } else {

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        var destViewController:FifthViewController = segue.destinationViewController as! FifthViewController
        destViewController.dateAndTimeSelected = dateAndTime    }
       }

My second approach was to use performSegueWithIdentifier, but I wont be able to pass data to the next view controller because dateAndTimeSelected is not available for use in first view controller.

@IBAction func nextButtonToFifthViewController(sender: AnyObject) {
    if timeRestricted.contains(hourComponents){
        self.label.text = "Please choose a time betwen 7:00 - 19:00"
    } else {

        performSegueWithIdentifier("toFifthViewController", sender: self)
  dateAndTimeSelected = dateAndTime
}