print("Hi, I am Marvin, your personal bot.")
print("Let's get started!!")
user_name = input("What's your name!?  ")
print(user_name)
print("Hello " + user_name + ". Welcome!!")
command = input("How can I help? ")
if command == "add":
  print("Let's add some numbers!!")
  input1 = input("Number 1>  ")
  input2 = input("Number 2>  ")
  input3 = input("Number 3>  ")
  result = int(input1) + int(input2) + int(input3)
  output = str(result)
  print(input1 + " + " + input2 + " + " + input3 + " = " + output)
elif command == "subtract":
  print("Let's subtract some numbers")
  input1 = input("Number 1> ")
  input2 = input("Number 2> ")
  number1 = int(input1)
  number2 = int(input2)
  result = number1 - number2
  output = str(result)
  print(input1 + " - " + input2 + " = " + output)
else:
    print("sorry I dont understand")