Why did this random interaction happen at the mall?

I like to just walk around the mall sometimes,

Today I was walking alone and there was a group of 3 or 4 teenagers walking in front of me.

Completely out of nowhere one of them looked back at me and he this interaction happened.

Him
“Can I say something?

Me
“Yeah what’s up”

Him.
“I just wanted to say I hope you have a good day”

Me.
“Thanks I appreciate it.”

(I should have said “thanks I appreciate it, I hope you and your friends do as well” but I didn’t think of that at the time)

Then he turned around and one of his friends asked what he said to me and he told them.

Then I decided to turn around and leave the mall which I was planning to leave soon anyway.

This was very wholesome but random.
He didn’t seem to be messing with what.

What do you think this was about?
Updates
10 mo
Anyone else.
Why did this random interaction happen at the mall?
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