<script>
const flight = 'LH123';
const amanda = {
name: 'Amanda Law',
passport: 54124092
}
const checkIn = function(flightNum, passenger){
flightNum = 'LH999';
passenger.name = 'Mr.' + passenger.name;
if(passenger.passport === 54124092) {
alert('Checked In');
} else {
alert('Wrong Passport!')
}
};
checkIn(flight, amanda);
console.log(flight);
console.log(amanda);
</script>