A : Good morning , Madam. Anything I can d for you ?
B : Yes , yesterday I bought a book. I have just found out that it has defect.
A : Really , I’m very sorry to hear that. If I had carefully than this , It wouldn’t have been in this situation.
B : Can I change it ?
A : Certainly. A I see the receipt , please ?
B : Here you are. And thank you very much.
B : Oh , how clumsy of me. I’m very sorry.
C : That’s a quite alright. Don’t worry.
B : Thank you very much. But if I hadn’t clumsied , I wouldn’t have steped on your foot.
C : Me too , If I had more careful. I wouldn’t have collied with you. Sorry.