Subtracting

print("Hi, I am Eley, your personal bot.")
command = input("How can I help? ")
if command == "add" or command == "plus":
    print("lets add 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)
command1 = input("Let's do a subtraction with the result of the sum: ")
if command1 == "let's do it" or command1 == "all right":
    print("lets subtract some numbers")
    input3 = input("Number 3> ")
    number3 = int(input3)
    number4 = int(output)
    print(number4)
    result1 = number3 - number4
    output1 = str(result1)
    print(input3 + " - " + output + " = " + output1)