Accept your mistakes and say "I'm sorry" - for all you know, some might wait a lifetime just to have you back.

接受你的错误并表示抱歉——要知道，有些人终其一生都在等你回心转意。

youdao

It's your turn, Sir. I'm sorry that you've had to wait. Saturday is a busy day for us.

先生，轮到你了。让你久等了，很抱歉。星期六我们比较忙。

youdao

We received your samples and price lists on May 4 and are sorry for not having replied earlier as we wished to wait for more favorable news to give you .

贵公司五月4日的来函收悉，因我司想等有更多的消息再与你联系，因此迟迟没回复。

youdao