[Anglika]

Originally Posted by Grinkl

Hi! techers.

A:We need to regulate the system.
B:I agree that regulations are necessary but there's a problem.
A:What is it?
B:The problem is how to regulate it.

I want to/would like to know two things about the conversation. First, is there any wrong part above? Second, isn't a comma necessary before but in the first
B line like ", but there's a problem"?

thanks in advance.

regards.

No, the comma is not necessary. It is optional in this context.

The dialogue is fine.