How can I ever repay you for your kindness?
Is there anything I can do?
Can I get you another one?
Will you excuse me for a few minutes?
Would you excuse me for interrupting?
Thank you for a very enjoyable evening.
I really don't know how I can thank you enough.
I should like to express my thanks for all that you have done for me.
I'm afraid I spilled coffee on the tablecloth.
I'm sorry, but I couldn't find the book you lent me.
I feel terrible, but I've just broken your ashtray.
A: I'm terribly sorry I'm late.
B: It doesn't matter.
A: Really sorry to have kept you waiting.
B: That's quite alright. What made you so late?
A: Well, when I was leaving, I just couldn't find the key to the door. I remembered that I put it on a table, but I just couldn't find it.
B: Did you find it at last?
A: No. My wife just came back and I rushed out of the room.
B: It's so fortunate for both you and me. Otherwise, I would still be waiting.
A: Definitely. To make it worse, the bus I took broke down halfway.
B: How did you come here? Change to another bus?
A: No. I got the taxi. Otherwise, I'd still be on the way.