I would like a pet penguin 
human
........... 
assistant
I would like a penguin as a pet 
human
I would like a happy human 
assistant
I'm not happy 
human
We could work towards your happiness by asking whether you would like more or less penguins in your life. 
assistant
I want more penguins in my life 
human
That's great to hear.  Would you like to order some penguins?
assistant
I would like a pet penguin 
human
........... 
assistant
I would like a penguin as a pet 
human
I would like a happy human 
assistant
I'm not happy 
human
We could work towards your happiness by asking whether you would like more or less penguins in your life. 
assistant
I want more penguins in my life 
human
How many would you like?
assistant