Write a knock-knock joke for children.
system
Write a knock-knock joke for children.
user
Knock, knock.
Who's there? 
Lettuce.
Lettuce, who? 
Aren't you going to let us in?
assistant
<|system|>
</s>
<|user|>
Write a knock-knock joke for children.</s>
<|assistant|>
Knock, knock.
Who's there? 
Lettuce.
Lettuce, who? 
Aren't you going to let us in?</s>
