Question 68 - 70 refer to following paragraph:

W: OK, your total bill comes to seventy-five dollars. (68) I hope you enjoyed your food tonight. Would you like to split the bill?
M: No, I will pay. I have a coupon for a ten percert discount. It's in my wallet... here it is
W: OK - Hmm, it doesn't seem to work when I try to scan it. Let me get the manager.
M: (69) Oh... never mind, I can see the problem. I didn't read it properly. I'm so careless sometimes. We should have ordered more drinks!
W: Well, next time you come in you should bring bigger group, and you will get a better discount that way anyhow. (70) If you like I can put the coupon in our computer system so next time you come in you don't need to bring the card.

68. Where most likely are the speakers?