def do_calculation():
    print("lets " + command + " some numbers")
    input1 = input("Number 1>")
    input2 = input("Number 2>")
    number1 = int(input1)
    number2 = int(input2)
    if command == "add":
        result = number1 + number2
    elif command == "subtract":
        result = number1 - number2
    elif command == "multiply":
        result = number1 * number2
    if command == "add":
        print(str(input1) + " + " + str(input2) + " = " + str(result))
    elif command == "subtract":
        print(str(input1) + " - " + str(input2) + " = " + str(result))
    elif command == "multiply":
        print(str(input1) + " * " + str(input2) + " = " + str(result))

### Welcome ###
print ("Hi, I am Albert, your personal bot.")
users_name = input("What is your name?")
print ("Welcome, " + users_name)
### Seleect Math Operation ###
finished = False
while finished == False:
  print ("I can do any of the following tasks for you: add two numbers, subtract numbers, or multiply numbers.")
  command = input("Type 'add', 'subtract', 'multiply' or 'end' to finish.")
  ### Perform Calculation ###
  if command == "add":
    do_calculation()
  elif command == "subtract":
    do_calculation()
  elif command == "multiply":
    do_calculation()
  ### End Program ###
  elif command == "end":
    finished = True

print ("Thanks for using my smarts to help. Bye for now")