buildAirlineTicketMaker.js

function buildAirlineTicketMaker(tclass){
  return function(name){
    alert("Here is your flight ticket via the " + tclass + ".\n" +
          "Welcome to Luxury, " + name + "!");
  }
}

var getFirstClassTicket = buildAirlineTicketMaker("First class");

var getBusinessClassTicket = buildAirlineTicketMaker("Business class");

var getEconomyClassTicket = buildAirlineTicketMaker("Economy class");

alert(getFirstClassTicket("Usain"));

alert(getBusinesClassTicket("Gatlin"));

alert(getEconomyClassTicket("Tyson"));