TASK DEFINITION: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
PROBLEM: I purchased these as a gift and upset that two of the lights are not working. I know they were inexpensive but I still expect them to arrive functioning. The other two that work are very bright and fit perfectly on my bike.

SOLUTION: I purchased these as a gift and upset that two ...

PROBLEM: some came apart had to glue them back together before attaching them to my hairbows. did not come in pairs.

SOLUTION: some came apart had to glue them back together before ...

PROBLEM: It made my hair limp and did not add volume. My friend loves it and recommended it, but it simply didn't work for me.

SOLUTION:
My friend loves it and recommended it, but it simply didn't work for me