How to grab the critical information (entities) which is unknown during the training process. (I know how to use general intents and entities to recognize user’s requests.) For example, I want to develop a reminder but I don’t know what user want to remind at design time and the content is arbitrary. The user may say “Remind me to ‘buy a concert ticket tomorrow’” or “Remind me to attend a meeting on Friday”. How to use RASA to grab ‘buy a concert ticket’ or ‘attend a meeting on Friday’?
Can anyone help me please? Sorry for my poor English.