word = input('Word: ') # This will ask you to print a word

if word == 'hello': # <- If your response is: 'hello'
    print('world') # <- It will output: 'world'
    
elif word == 'world': # If the response is: 'world'
    print("Hey, that's my line >:(") # It will print this
else:
    print("Hey buster you gonna say hello or not?")
# If sombody prints ANYTHING ELSE other than 'hello' or 'world'
# It will output that print statment above!

#Hope this helped you!