import sys

class Service:
  def __init__(self, name, price):
    self.name = name
    self.price = price

oil = Service("Oil change", 35)
tire_rotation = Service("Tire rotation", 19)
car_wash = Service("Car wash", 7)
car_wax = Service("Car wax", 12)

services = [ oil, tire_rotation, car_wash, car_wax ]

def main():
  print("Davy's auto shop services")
  for service in services:
    print('%s -- $%s' %(service.name, service.price))

  print('')

  first_service_name = input('Select first service: ')

  print('')

  second_service_name = input('Select second service: ')

  print('')

  for service in services:
    if service.name == first_service_name:
      first_service = service
    elif service.name == second_service_name:
      second_service = service

  print("Davy's auto shop invoice \n")


  if (first_service_name == '-'):
    print('Service 1: No Service')
    first_service_price = 0
  else:
    print('Service 1: %s, $%s' %(first_service.name, first_service.price))
    first_service_price = first_service.price

  if (second_service_name == '-'):
    print('Service 2: No Service')
    second_service_price = 0
  else:
    print('Service 2: %s, $%s' %(second_service.name, second_service.price))
    second_service_price = second_service.price

  print('')

  print('Total: $%s' %(first_service_price + second_service_price))

main()