Oh,it is getting late. 哦,很晚了.

I have another appointment. 我还有其他的事.

I have got to run. 我得走了.

I’d better go. 我得走了.

Nice talking to you. 很高兴跟你谈话.

Nice meeting you. 很高兴认识你.

Take it easy. 保重.

So long.再见.

See you later. 改天见.

Keep in touch. 保持联络.