Hi Aravind,
The bot being unable to put cases to the Q is very rare. In fact, I've never encountered it. As Shikhar correctly indicates, you have to provide more details. Are you actually experiencing this problem or is it a situation you are considering to handle in case it occurs?
Happy coding!
---------------
Paul
Sweden
Happy coding!
Paul, Sweden
(By all means, do not mark this as the best answer!)