This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. of, relating to, or in the style of a conversation; informal and chatty

adj. involving a two-way exchange of messages, such as between a client and a server

adj. Pertaining to conversation; in the manner of one conversing.

Of, pertaining to, or characteristic of conversation: as, conversational powers; a conversational style.

adj. characteristic of informal spoken language or conversation

"If you understand gender differences in what I call conversational style, you may not be able to prevent disagreements from arising, but you stand a better chance of preventing them from spiralling out of control ..."

informal   

confabulatory    confabular    colloquial    interlocutory    chatty    dialogic    cosy   

Congregational    aberrational    coeducational    computational    conformational    confrontational    congregational    connotational    denominational    educational   

musical    matter-of-fact    colloquial    poetic    diplomatic    terse    oratorical    rhetorical    genial    verbal