第一句：Mr. Brown, my colleague Ms. Green deals with delivery. She has called you back.
A: Mr. Brown, my colleague Ms. Green deals with delivery. She has called you back.
B: Yes. She has explained to me.
A: I'm sorry about this.
B: I hope you can take measures to solve the problem.
第二句：We're changed our procedures so it won't happen again.
A: We're changed our procedures so it won't happen again.
B: It caused a great amount of losses.
A: Yes, I know. Can we offer you some sorts of compensation?
We apologize for the mistake. It won't happen again.
We apologize for the mix-up. We've sorted things out now.