text: var greeting;
  
  var newCustomer = true;
  
  if (newCustomer) {
    greeting = function() {
      alert("Welcome Amigos");
    };
  } else {
    greeting = function() {
      alert("Welcome back Amigos");
    };
  }
  
  
  closingMessage(greeting);
  
  function closingMessage(message) {
    message();
  }
  