You shouldn't ignore someone based on their job.
James is on a blind date and just found out his current partner works as a waiter.
James wants to avoid wasting time with partners he thinks are inadequate.
James asks what his partner plans to be doing ten years from now.
James immediately loses interest in the conversation and starts playing on his phone.
James finds out his partner is a passionate psychology grad student, and they have an interesting conversation about their experiences in therapy.
James' partner leaves in less than a minute, but not before explaining that his dad owns the restaurant chain where he works while he's in business school.