再见!zài jiàn! Goodbye!
明天见。míng tiān jiàn. See you tomorrow.
一会儿见。/待会儿见。yī huìr jiàn./ dāi huìr jià. See you later.
有空常联系 。yǒu kòng cháng liánxì. Let's keep in touch.
我告辞了。wǒ xiān gàocí le. I gotta go now.
对不起,我先走了。duì bù qǐ ,wǒ xiān zǒu le. Excuse me,I have to go now.
您多保重!nín duō bǎozhòng !Take care!
一路平安!/ 一路顺风!yī lù píng ān! / yī lù shùnfēng !Bon voyage!
到了以后我给你打电话。dào le yǐhòu wǒ gěi nǐ dǎdiànhuà. I will call when I arrive.