Считать из файла определенную инфу в класс

class kassa
{
public:
    int flightNumber;
    int numberOfSeats;
    char *flightName;
    int flightCost;
private:
    void getInfo(const ifstream);
};

    ifstream fin("file.txt");
    kassa obj;
    fin >> obj.flightNumber >> obj.flightName >> obj.numberOfSeats >> obj.flightCost;

#include <iostream>
#include <fstream>
#include <conio.h>
#include <Windows.h>
 
typedef unsigned short int us_int;
 
using namespace std;
 
class kasa
{
private:
    us_int flightNumber;
    us_int numberOfSeats;
    char *flightName;
    us_int flightCost;
public:
    kasa();
    ~kasa();
    void setInfo(ifstream);
    void getData();
};
 
kasa::kasa()
{
}
 
kasa::~kasa()
{
    delete [] flightName;
}
 
void kasa::getData()
{
    cout<<flightNumber<<endl;
    cout<<flightName<<endl;
    cout<<numberOfSeats<<endl;
    cout<<flightCost<<endl;
}
 
void kasa::setInfo(ifstream in)
{
    flightName = new char [50];
    in >> this->flightNumber>> this->flightName>> this->numberOfSeats
        >>this->flightCost;
}
 
int main()
{
    ifstream file_in("available_flights.txt");
    kasa ks;
    ks.setInfo(file_in);
    ks.getData();
 
    getch();
    return 0;
}

void setInfo(ifstream&);