The Mistaken Identity

Scene -1:
There was a book exhibition in my office and my friend and I were browsing thru the books and I had few CDs in my hand. Then, one lady whom I knew came and asked me if there is any discount. I said "Yeah. it is 22% over books and 10% over CDs". There was another girl a little far from us and was listening to this. And now she repeated the same question to me. Though I don't know her, I replied her with the information that I knew about the discounts. Here one thing that should be noted is we were standing in one side of the table where books were displayed and these two girls were standing the other side.

We were still browsing thru the books. And the unknown lady who repeated the question came back to me with a Harry Potter book and asked me "Excuse me, what is the price of this book?".!!!!!!!!!!!!!!!!!

Scene -2: I had gone to my cousin's marriage recently and was talking to one of my relative. There was another lady who was sitting beside her and observing me for a while. There was a kid of 5-6yrs just beside me. During a discussion, that lady who was sitting with my relative asked me whether that kid is my son!!!!!!!!!!!!!!!!