1. Python program for railway reservation system

def reserve(CLASS):
    if CLASS==1:
        print('welcome to the REGULAR CLASS SEAT reservation')
        dest=int(input('enter your destination in km  '))
        stat=int(input('enter stations in between '))
        price=10*dest
        amount=price+(10*stat)
        print('the price for 1 seat is =',amount)
        seat=int(input('enter no of seats'))
        total=amount*seat
        print('your final price is =',total)
        print('you will have to pay',total,'INR')
        return total,seat,amount
    if CLASS==2:
        print('welcome to the FIRST CLASS TICKET reservation')
        dest=int(input('enter your destination in km  '))
        stat=int(input('enter stations in between '))
        price=20*dest
        amount=price+(15*stat)
        print('the price for 1 seat is =',amount)
        seat=int(input('enter no of seats'))
        total=amount*seat
        print('your final price is =',total)
        print('you will have to pay',total,'INR')
        return total,seat,amount
    if CLASS==3:
        print('welcome to the ROYAL CLASS SEAT reservation')
        dest=int(input('enter your destination in km  '))
        stat=int(input('enter stations in between '))
        price=20*dest
        amount=price+(20*stat)
        print('the price for 1 seat is =',amount)
        seat=int(input('enter no of seats'))
        total=amount*seat
        print('your final price is =',total)
        print('you will have to pay',total,'INR')
        return total,seat,amount
     
print('WELCOME TO THE RAILWAY RESERVATION SYSTEM  ')
a=int(input('enter 1 for your new registration'))
b=int(input('please enter 1 for regular class        enter 2 for first class               enter 3 for royal class'))   
if a==1:
    name=input('enter your full name')
    gender=input('enter your gender as MALE or FEMALE')
    phone=input('enter your 10 digit mobile no.')
x,y,z=reserve(b)
print('_____________________________________________ ')
print('|   NATIONAL RAILWAY AUTHORITY OF INDIA')
print('|NAME:',name,'    phone no.:',phone,'   ')
print('|no. of seats:',y,'     gender:',gender,'     ')
print('|amount per seat:',z,'  TOTAL:',x)
print('|_____________________________________________')