Code

#include <stdio.h>
#include <conio.h>
void main()
{

    int age[10] = {0}, ticket_id[9] = {0}, status[9] = {0}, class, infant = 0, child = 0, adult = 0, s;
    float class_mult, total_fare;
    int person, trip, mult_trip, meal_opt, meal_p, choice;
    char num, confirm, passport[9], name[9][28], email[28], dest_f[16], dest_t[16];
main:
    printf("\n       ********************************************************************\n");
    printf("                        * Welcome to [name] airline system *                  \n");
    printf("       ********************************************************************\n");
    printf("Enter your choice from below\n");
    printf(" 1 - Reservation\n 2 - Records \n 3 - Cancel \n 4 - Exit \n");
    scanf("%d", &choice);
    switch (choice)
    {
    case 1:
        printf("Enter the number of travellers (Max : 9)\n");

        scanf("%d", &person);
        getchar();
        if (person <= 9)
        {
            printf("Seats are available!\n");
        }
        else
        {
            printf("No seats available!\n");
            goto main;
        }

        for (int i = 0; i < person; i++)
        {
            if (age[i] == 0)
            {

                printf("Enter the name of person %d\n", (i + 1));
                scanf("%s", &name[i]);
                getchar();
                printf("%s , Enter your passport number \n", name[i]);
                scanf("%s", &passport[i]);
                getchar();
                printf("%s ,Enter your age \n", name[i]);
                scanf("%d", &age[i]);
                getchar();
            }
        }
        // for (int j = 0; j < person; j++)
        // {
        //     if (age[j]<=2)
        //     {
        //         infant++;
        //     }
        //     else if (age[j]<=12 && age[j]>2)
        //     {
        //         child++;
        //     }
        //     else adult++;

        // }

        printf("Enter your Mobile Number: \n");
        scanf("%s", &num);
        getchar();
        // printf("num = %llu",num);
        printf("Enter your Email: \n");
        scanf("%s", &email);
        getchar();
        printf("Enter your Destination\n");
        printf("From: \n");
        scanf("%s", &dest_f);
        getchar();
        printf("To: \n");
        scanf("%s", &dest_t);
        getchar();
    cls:
        printf("\n Class:\n 1) Business \n 2) Premium Economy \n3) Economy \n");
        scanf("%d", &class);
        getchar();
        switch (class)
        {
        case 1:
            class_mult = 1.20;
            break;
        case 2:
            class_mult = 1.10;
            break;
        case 3:
            class_mult = 1;
            break;

        default:
            printf("You've entered the wrong choice please try again!\n");
            goto cls;
            break;
        }
    trip:
        printf("Choose: \n 1)One way \n 2) Round trip \n");
        scanf("%d", &trip);
        getchar();
        switch (trip)
        {
        case 1:
            mult_trip = 1;
            break;
        case 2:
            mult_trip = 2;
            break;
        default:
            printf("You've entered the wrong choice please try again!\n");
            goto trip;
            break;
        }
    meal:
        printf("Choose the meal package\n 1)Regular \n 2) Deluxe \n");
        scanf("%d", &meal_opt);
        getchar();
        switch (meal_opt)
        {
        case 1:
            meal_p = 500;
            break;
        case 2:
            meal_p = 1500;
            break;
        default:
            printf("You've entered the wrong choice please try again!\n");
            goto meal;
            break;
        }
        total_fare = ((float)((3000 + meal_p) * person * mult_trip)) * class_mult;
        printf("Your Total Fare for this Flight is %.2fRs \n", total_fare);
        printf("Would you like to proceed? (Y/N)\n");
        confirm = getchar();
        switch (confirm)
        {
        case 'Y':
        case 'y':
            printf("Your flight has been  confirmed! \n Here are the Flight details\n");
          // Program is exiting here!!! Please help
            for (int j = 0; j < person; j++)
            {
                printf("%d) Name  = %s \n Passport no. = %s \nAge = %d \nTicket ID =  %d \n", (j + 1), name[j], passport[j], age[j], (j + 1));
                if (class == 1)
                {
                    printf("Class = Business\n");
                }
                else if (class == 2)
                {
                    printf("Class = Premium Economy\n");
                }

                else
                {
                    printf("Class = Business\n");
                }

                printf("Seat no. = A-%d \n", (j + 1));
            }
            printf("\n From: %s \n To: %s \n");

            break;
        case 'N':
        case 'n':
            printf("\nWe are redirecting you to the main menu.......\n ");
            goto main;
            break;
        default:
            break;
        }
        break;
    case 2:

        break;
    default:
        printf("You've entered the wrong choice please try again!\n");
        goto main;
        break;
    }

    // for (int j = 0; j < person; j++)
    // {
    //     printf(" the name of person %s is %s \n", (j + 1), name[j]);

    //     printf(" the age of person %d is %d \n", (j + 1), age[j]);
    // }
}