Colloquy is a noun that refers to a conversation.

Our word of the day comes from the Latin word colloquium (coe LOW kwim) which means ‘conversation.’ The word has evolved into English, holding on to its same basic meaning. Colloquy is typically used in a formal context. For example: After our brief chat over a beer about the meaning of life, the four of us attended the theological conference where we had an official colloquy over the meaning of life. If you ask me, the chat over beers was a little more fun.