Can I help you find a new job, please?
I have been at plenty of stores before where I wanted to ask that exact question to the sales clerk at a checkout counter.
It comes from the general attitudes that some employees have. You know what I am talking about. Perhaps they are just having a bad day, you might say, but I have worked in plenty of people-jobs and have had plenty of bad days just like everybody. But I never let it come through to customers to the extent that the expression on my face conveyed utter disgrace.
Honestly - I have been helped by folks before and they seemed to make it quite clear that their apathy was either a result that they absolutely hated their job, or that having to even speak to me, much less scan my item, was the biggest annoyance of their life to date.