Jamie has clearly spent a lot of time in places like this and knows how to handle unwanted attention; no matter what Joey says to her, she has a funny comeback to brush him off. This is going to take a lot of work.
The first thing is to change this music. Did you notice the panel by the entrance to the VIP Lounge?
Have Rosa input the band on the poster in Jamie's dorm, Epileptic Fish, into this panel. When you do this, Jamie will agree to dance with Joey.
Now she'll make small talk. But in order to actually save Jamie, Joey is going to have to get her total confidence.