hello = "Hi Human, I am B.O.B. "
question1 = "What is your name? "
response1 = "Thats a lovely name! "
input(hello+question1)
print response1

answer_type = "Please answer in 'yes' of 'no'. "
question2 = "Can I help you? "
response2 = "I am a computer, not a human. "
input(question2+answer_type)
print response2

question3 = "Did you like that information? "
goodbye = "Great. Goodbye! "
input(question3+answer_type)
print goodbye

hello = "Hi Human, I am B.O.B. "
question1 = "What is your name? "
response1 = "Thats a lovely name! "
input(hello+question1)
print response1

answer_type = "Please answer in 'yes' or 'no'. "
question2 = "Can I help you? "
response2 = "I am a computer, not a human. "
input(question2+answer_type)
print response2

question3 = "Did you like that information? "
goodbye = "Great. Goodbye! "
input(question3+answer_type)
print goodbye

Update bob.py