Joe:  Laura, what are you going to do today?
Laura:  I'm going shopping.
Joe:  What time are you leaving?
Laura:  I'm going to leave around 4 O'clock.
Joe:  Will you buy a ham sandwich for me at the store?
Laura:  OK.
Joe:  Do you have enough money?
Laura:  I'm not sure.
Joe:  How much do you have?
Laura:  25 dollars. Do you think that's enough?
Joe:  That's not very much.
Laura:  I think it's OK. I also have two credit cards.
Joe:  Let me give you another ten dollars.
Laura:  Thanks. See you later.
Joe:  Bye.