Why did the female cashier said have a nice day to me but didn’t said it to anybody else who was leaving the station?

I was at the gas station for like 20 minutes and I didn’t hear the female cashier said have a nice day to anyone else but me only when I was leaving the station? The place was busy because it was lunch time
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She was available to socialize when I left. That’s what happened.
Why did the female cashier said have a nice day to me but didn’t said it to anybody else who was leaving the station?
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