Represent the dialog for retrieving similar scenarios Jean-Speaker2: Are you on crack?
Speaker3: Me? No. Why?
Jean-Speaker2: do you want some? 
Speaker1: Leave him alone. You won't convince him to change the opinion.
Represent the dialog scenario for retrieval Speaker3 is not on crack. According to Speaker1, Speaker3 will not change his mind.
Represent the dialog scenario for retrieval Speaker2 is having a downtime, isn't very talkative. Speaker1 wants to see Speaker2 tonight but he has to rain check.