1. Mr Kessel: Go and get me a coffee, Matthew.
Matthew: I'm sorry, are you talking to me?
Yes. He did but he is pretending that he didn't. Matthew is offended by the way he was given the order, and is suggesting that when Mr Kessel talks to him he should be more polite.
2. Mrs Jarvis: You are nearly an hour late!
Mr Jarvis: It won't happen again.
Yes. Mr Jarvis is admitting responsibility for being late, and is promising to make amends (by not dioing it again). Therefore this is an indirect apology.
3. Joey: I'm afraid I found that movie really boring.
Diana: I shouldn't have insisted on going to it. Your choice would have been better.
No. Joey is complaining politely. Diana is indirectly apologising for insisting that Joey go to a boring movie with her.
4. Manager: We regret the delay, naturally.
Lucy: I'm sorry, is that all you have to say?
Yes. Lucy 'apologises' to let the manager know that she does not accept what he is saying, and she indends to demand further action.
5. George: I'm sorry you failed your exam.
Barbara: You should be too.
Yes. By her reply Barbara is suggesting that George is in some way responsible for her failing.
6. Ed: Excuse me, I think that is my seat.
Ashley: I'm sorry, but I don't see a 'reserved' sign.
No. Ashley is telling Ed he can't have the chair. He says that it was not taken when he came, and Ed must look for another one. (Notice the present tense of the words 'don't see'.)
7. Ann: Oh, you've spilt my coffee!
Jules: Oh dear. I didn't burn you, did I?
Yes. Jules shows surprise and regret ('oh dear'), and takes responsibility by saying 'I' in the question. (He could have asked 'were you burned?')
8. Jim: Can I have two bottles of beer please?
Barman: I'm sorry, I think you said lemonade, young man.
Yes. He says 'sorry' because he is not going to give Jim any beer. He calls Jim 'young man' because he thinks Jim is too young to drink alcohol, and he suggests lemonade instead.