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Also they give some "tactical talk" examples for certain situations, how to start what we should say in difficult situations. This is also practical so here we go:
When you disagree:
- It seems to me that the problem is . . .
- My concern is that we may not have enough . . .
- Please explain this to me. There appears to be an error. . . .
- While I don’t agree with your conclusion, you certainly have the right to your opinion.
- Would it be possible for you to recheck . . . ?

When you're interrupted:
- Pardon me, I’m not through. Just give me a few seconds to finish my point.

When you run into a buzz saw:
- Obviously, you’re too upset to discuss this now. I’ll talk to you later.
- We don’t have to agree, but is there any reason we can’t be civil to each other?
- I can see why you may feel that way. . . .
- You’d have every right to feel that way if that were the case.
- I understand you have a problem with that, but I expect to be treated with courtesy, respect, and the professionalism I’ve earned.
- Please tell me frankly what I’ve done to offend you.

When you're being pressured:
- I don’t feel totally comfortable [with that] [talking about that]. . . .
- Don’t you think it would be a good idea to hold off until . . . ?

When you reprimand:
- What steps would you suggest to correct that?
- I’m sure you don’t realize it, but . . .
- Perhaps you didn’t understand the consequences that could result from . . .
- Maybe I failed to make myself clear. . . .

When you want to express your anger:
- I have to tell you that I felt offended by that remark.
- I was upset when I realized the decision was based on . . .
- I felt I was treated badly when I wasn’t informed in advance about the change.

When you want to clear up confusion:
- I’d appreciate your help with this muddled negotiation. Is it true that you said . . . ?
- When all the facts are in and verified, it will be apparent that . . .
- It looks like following this system got our signals crossed. However, we can . . .
- Perhaps I misunderstood. Are you saying that . . . ?
- Let me see if I understand this. Would I be correct in assuming that you feel . . . ?

That's it. Some of them may even be useful on imageboards in some altered form, or as is.