RENU: Do you have change for Rs.500/- note?
LAILA: Yes, I have. What do you need it for?
RENU: I need some change for metro train.
LAILA: How do you want it?
RENU: Please give me four hundred rupee notes and two fifty rupee notes, if possible.
LAILA: Take three hundred rupee notes, three fifty rupee notes, and five ten rupee notes. I hope it will solve your problem.
RENU: Definitely. I am so thankful to you.
LAILA: What have I done for you that you are so thankful? I have given you five hundred rupees and you have given me five hundred. I haven’t given you any extra money.
RENU: Still it is a help.
LAILA: Why don’t you get a smartcard for metro? You don’t have to buy a ticket everyday.
RENU: Yes, I think I must get one. It will save a lot of time. I won’t have to stand in the queue again and again, and arrange for change.
LAILA: I also have a smartcard, though I travel only once or twice a week by metro.