Tom: We have to get the tickets Saturday
Tom: at the latest
Mary: why?
Mary: why the rush?
Tom: there might not be any tickets left after the weekend
Mary: why do you think that
Tom: last year it was like that
Tom: and I don't want to end up with no tickets
Tom: like last year
Mary: Ok we can get them on Thursday
Tom: ok great
Tom and Mary will buy tickets on Thursday, because there might not be any tickets left after the weekend.