Reply to dealing with party guest

well recently at the house parties I play, some body will request a song and I will be like ok I will try and work it into my mix. But five mins later they will come back up to the table and be like when are you gonna play my song. I am ready to hear it. And I am like its coming don't worry. As I am trying to work up into the bpm's to get to there song they come up again and is like why haven't you played my song. They don't understand that I may be in 80 bpm range and there song they wanted might be 120bpm.

I hate it when people come up to me like that it pisses me off.

so I was wondering what do you guys do for these kinds of people.