I keep saying “have a good one” the same time they do?

It’s been happening a lot recently. If I’m leaving a grocery store, after meeting an employee, I’ll look at them and say “have a good one” the same exact time they do. I think in my head “I’m going to take intiative and say it first” but then I just end up saying it the same time. How do I fix this? I’ll even look at them for like half a second then prepare to say it then they say it at the same time.