Two stage fallback policy: users reaction to rephrase question

Hi all,

I am working on the two stage fallback policy. When you don’t understand the message of the user, you give them the button options. If the user chooses the option: ‘something else’, the bot will then ask to rephrase. In the example of Sara (Rasa’s own chatbot)

Sarah: Could you rephrase your message please?

What I would like to have, is when the user says ‘yes’, the bot will reply with: ‘allright, go ahead!’, if the user says ‘no’, the bot will reply with: 'I’m sorry, in that case I can’t help you". and if the user chooses to rephrase the message, the bot will continue with this message.

I was wondering if this is in any way possible?