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.