RE: pioyu previous problem

Your previous for "I am still dancing." is "I am dancing now.", if you want to also use it after "I am still dancing.", then set this as a previous as well. A response can have multiple previous responses.

You could also use a "topic".

i.e.

dance
I am dancing now.
think: conversation.topic = "dancing";

dance
I am still dancing.
topic: dancing