Hello, the question and answers by users, chatbot and agents are all stored on an embedded pagelist in the Interaction object. It is not possible to report on them using a Report Definition. An activity can be written to scour the interactions, get the message log, identity the ones from the user (They would be the inbound messages) and add them to a clipboard page list. A section with a table can then be used to display it. There is no OOTB utility available to generate this type of data. 

Amit