Excuse me, I have something to trouble you.
Yes? I'll be very glad if I could be of any help to you.
An hour ago, I bought this vase with my tourist.
Oh, yes. I remember it clearly. Is there anything wrong with it?
I'm afraid so. We found this crack on the bottom when I went back to my hotel.
Oh, how awful! Let me have a look, I'm terribly sorry. It was most thoughtless of me. Would you excuse me, please?
Oh, It's quite all right, I suppose. It can't be helped sometimes.
It's very kind of you to say so. How about changing another one for you?
All right. Thank you.
Just a minute, please. I won't be long. I'm sure this one is perfect. You may examine it carefully.
Oh, yes, it is. I'll take this one.
I'm very sorry for any inconvenience I've caused you.
Well, there's no reason to apologize for such a trifle thing.