As per dream interpretation and meaning, dreaming of attending a conference is a positive and good dream. It means recognition and travel in near future. It also means acceptance of your ideas.
Dream of attending conference and you are happy means you will find new friends with similar interest. It also means honor and acceptance.
Dream of attending conference and you are unhappy means there will be debates and your ideas might not be accepted. It also means tiff with a jealous colleague or senior.
Dreaming of attending conference in an unknown location or strange location means travel.