Task: Categorize the tweet based on the intensity of the specified emotion E, capturing the tweeter's mental state. 0: no E can be inferred. 1: low amount of E can be inferred. 2: moderate amount of E can be inferred. 3: high amount of E can be inferred.
Tweet: @AerLingus #business class #Los Angeles to Dublin #destroyed luggage #60 day customer response time #unhappy customer
Emotion: sadness
Intensity class: 
2: moderate amount of sadness can be inferred