I can see where the escort is coming from but he shouldn't have said it like that. Let's say it's Noon day of appt and your session is for 7pm. He gets a text from someone else asking if he's free that evening at 7pm and before he tells that guy no I'm booked he asked you if you two were still on for that evening. But he shouldn't have said hey are we still on because if not I got other clients waiting. All he should have said was just hi, good afternoon, just wanna make sure everything is still a go for this evening.