The current thesis surveys the native speakers of Korea, China and Japan, the Japanese learners of Korean, and the Japanese learners of Chinese to analyze and examine the characteristics of the level of demand in each of the scenes in which the personal information is requested of the instructor. And the results are as follows. 1) For the semantic function of the native speakers in Korea, China and Japan, ‘explanation’ is frequently used in Korea and China and "obliging assent" is frequently used in Korea and Japan, while apology is frequently used in Japan. 2) The native speakers of Korean and Chinese have the strategy to persuade the conversational partner through ‘a lengthy explanation’, while those of Japanese through ‘obliging assent’ and ‘apology’. 3) The native speakers of Chinese manage their language in such a way that the logical explanation strategy works effectively in persuading the partner.