How can show a modal message ?

Forms\Components\TextInput::make('email')
  ->email()
  ->required()
  ->unique(Guest::class, 'email', ignoreRecord: true)
  ->reactive()
  ->afterStateUpdated(function ($state, callable $set) {
    $guest = Guest::where('email', $state)->first();
    if($guest) {
      $set('name', $guest->name);
      $set('telephone', $guest->telephone);
      
      // Show Modal here
      \Filament\Notifications\Notification::make()
        ->title('¡Cuenta existente!')
        ->body('Esta cuenta ya está registrada en nuestro sistema.')
        ->seconds(5)
        ->danger()
        ->send();
    }
  })
->columnSpan(1),