The random plot elements ladies and gentlemen:

A rude 31 year-old woman
A kindly 18 year-old woman
A shopping centre
Getting lost
stubbornness

This is promising:

“Excuse me Miss, we’re looking for JB Hi-Fi?” James enquired of the woman with the pram.

“What do I look like, information?” This one wasn’t about to help them locate themselves.

“Bitch,” Sam muttered under his breath.

“Yep,” James concurred, “ask this one.”

“Excuse me, could you please tell us JB Hi Fi is?” Sam asked.

The girl smiled. At least she had a sense of humour.

“It’s right behind you,” she laughed.

She continued to smile at the boys as she passed by.

“Nice,” Sam spoke as they smiled back at the girl.

“Yep,” James concurred, “my turn.”

Cheers as always to http://writingexercises.co.uk/plotgenerator.php