In Korean culture, saying no is not always straightforward due to a strong emphasis on respect and politeness. However, with the increasing globalization of Korea, it's becoming more common for locals to want to try new things. To say no in Korean without offending someone, use Kkomsarhami na-iyo, geudae-yeoreo, which literally translates to "I appreciate your suggestion, but I'm not interested." This phrase acknowledges the person's effort to help you while clearly communicating your decline. When responding with this phrase, it's customary to bow slightly and smile to convey gratitude. Remember that even with a negative response, you're still showing respect and kindness in Korean culture.