let Ticket = require("./module");
let t1 = new Ticket("15A","USEG12", "NewYork", "12/3/22");
console.log(t1.display());
t1.updateSeatNum("15B");
console.log(t1.display());
console.log(t1.getFlightNum());
t1.updateTravelDate("1/6/22");
console.log(t1.display());