The context of the following conversation is Kendall's favorite song came on and didn't want to dance alone. Kendall asked Sydney's friend if they wanted to dance.:
Kendall says I sure feel like dancing..
The friend responds Well, go ahead..
Kendall responds I don't want to dance alone..
The friend responds That person at the bar is a friend of mine.  They will dance with you..
Kendall responds Are you sure?.
The friend responds Just tell them you know me, point to me, and I'll wave my approval..