print("Hi, I am BoBo your personnal Bot!")
print("How can I help?")
#choisir l'opération
op_name =input()
# addition
#test l'entrée
if op_name == "add" or op_name == "Add" or op_name == "+" :
  print("It's time to add :)")
  #premier nombre
  input1 = int(input("give me a first number1"))
  #second nombre
  input2 = int(input("give me a second number2"))
  #addition
  result = int(input1 + input2)
  print ("the result is "+ str(result))
#soustraction
elif op_name == "subtract" or op_name == "Substract" or op_name == "-":
  print("It's time to substract :)")
  #entrée premier nombre
  input1 = int(input("give me a first number1"))
  #entrée second nombre
  input2 = int(input("give me a second number2"))
  #calcul soustraction
  result = int(input1 - input2)
  print ("the result is "+ str(result))
elif op_name == "multiply" or op_name == "Multiply" or op_name == "x":
  print("It's time to multiply :)")
  #entrée premier nombre
  input1 = int(input("give me the first number1"))
  #entrée second nombre
  input2 = int(input("give me a second number2"))
  #calcul multiplication
  result = int(input1 * input2)
  print ("the result is "+ str(result))
#autre
else :
  print("Sorry, I can't help you! bye")