'Have you been here long?' he asked conversationally.

“你来这里的时间长吗？”他攀谈式地问道。

《牛津词典》

I am at an unfavourable position in being conversationally unacquainted with English.

我由于不熟悉英语会话而处于不利地位。

《新英汉大辞典》

How is it possible to become conversationally fluent in one of these languages in 2-12 months?

怎么可能在2到12个月内就学用某种外语进行流利的对话？

youdao

If you try it aloud, you will probably say it rather softly, conversationally.

WSJ: Word Craft: Tracy Kidder and Richard Todd on Good Prose