attachment 1

import java.util.Scanner;
public class ServiceCenterExample {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String customerName;
        int tokenNum;
        String agentName;
        int boothNum =0;
        String[] ServiceCenter = new String[7];
        //for (int x = 0; x < 6; x++ ) hotel[x] = ""; //initialise
        initialise(ServiceCenter); //better to initialise in a procedure
        while ( boothNum < 6 )
        {
            for (int x = 0; x < 6; x++ )
            {
                if (ServiceCenter[x].equals("e"))System.out.println("booth " + x + " is empty");
            }
            System.out.println("Enter booth number (0-5) or 6 to stop:" );
            boothNum = input.nextInt();
            System.out.println("Enter customer name for booth " + boothNum +" :" ) ;
            customerName = input.next();
            ServiceCenter[boothNum] = customerName ;
            for (int x = 0; x < 6; x++ )
            {
                System.out.println("booth " + x + " occupied by " + ServiceCenter[x]);
            }
        }
    }
    private static void initialise( String hotelRef[] ) {
        for (int x = 0; x < 6; x++ ) hotelRef[x] = "e";
        System.out.println( "initilise ");
    }
}