I'm sorry guys for some off but I found 2 discrepances in this dialog

1) She paid no attention who was going to play on the concert. When someone offers me a ticket to a concert, the first thing I ask is what band's coming.

Once as I did not take care of the band that were playing, I took my girlfried to a concert where the band played very badly and eventually the solist, who was very drunk, turned stripped nacked and began to urinate on the scene.

2) Jim's bought the tickets on two bands in advance. The first band is supposed to play on Wednesday. As I assume that band may hardly take a day off and then play once again in the same hall, so on Friday they must be expecting another band to come. Obviously, Jim works at the ticket office; Remember he asks "может быть в пятницу?" form what I understand he must have tickets for all week days, so if you can't go on today we'll go tomorrow, if not tomorrow, then the day after tomorrow and so on.