Simple ATM

inscribedCustomers = {}

class Customers(dict):
    def __init__(self, name, password, balance):
        self.name = name
        self.password = password
        self.balance = balance

    def tell(self):
        return self.name

    def tell_password(self):
        return self.password

    def tell_balance(self):
        return self.balance


def add(person):
    inscribedCustomers[person.tell()] = [person.tell_password(), person.tell_balance()]


def delete(person):
    del inscribedCustomers[person]


def check_balance():
    check_name = str(raw_input('\nName: '))
    if check_name in inscribedCustomers:
        print "\nWelcome %s it's good to see you again" % check_name
        check_password = str(raw_input('\nEnter password: '))
        if check_password in inscribedCustomers[check_name]:
            print '\nYour balance is %s.\n' % inscribedCustomers[check_name][1]


def register():
    enter_name = raw_input('\nEnter name: ')
    enter_password = raw_input('\nEnter password: ')
    reenter_password = raw_input('Reenter password: ')
    if enter_password == reenter_password:
        input_balance = int(raw_input("\nEnter how much you'd like to deposit (USD): "))
        print '\n'
        result = Customers(enter_name, reenter_password, input_balance)
        add(result)
    else:
        print "%s your passwords must match in order to register." % enter_name
        return


def main():
    print 'Welcome to Trusty SP. ' \
          'We desire to make your banking easier.' \

    input_main = raw_input('What would you like to do?\n\n'
                           '1. Register\n'
                           '2. Check Balance\n'
                           '3. Delete Account\n\n'
                           'Enter Choice: ')

    if input_main == '1' or input_main == 'Register' or input_main == 'register':
        register()
        main()

    elif input_main == '2' or input_main == 'Check Balance' or input_main == 'check balance':
        check_balance()
        main()

    elif input_main == '3' or input_main == 'Delete Account' or input_main == 'delete account':
        delete_name = raw_input('\nName: ')
        if delete_name in inscribedCustomers:
            delete_password = raw_input('Password: ')
            if delete_password in inscribedCustomers[delete_name]:
                print '\n%s your account will be delete and your funds of %d will be returned.\n' \
                                            % (delete_name, inscribedCustomers[delete_name][1])

                assure_delete = raw_input("Are you sure you want to delete?\n"
                                      "\n1. Yes"
                                      "\n2. No, I changed my mind."
                                      "\n>> ")

                if assure_delete == '1' or assure_delete == 'Yes':
                    delete(delete_name)
                    main()
                elif assure_delete == '2' or assure_delete == 'No':
                    print '\nReturning to main screen.\n\n'
                    main()
    else:
        print 'We would appreciate your comments, please write below.\n'
        comments = raw_input('Comments: \n')
        for i in comments:
            if i == 'I':
                reply = comments.replace('I', 'Master Chief')
                print reply
                print '\nYou done messed up A-Aron.'



if __name__ == '__main__':
    try:
        main()

    except KeyboardInterrupt:
        print 'Returning...'
        main()
    except ValueError:
        print 'Invalid entry'
        main()