Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: my husband lost £800 when he booked an apartment through @Airbnb that didn't exist... @AirbnbHelp didn't care #nightmare #airbnbnightmare
This tweet contains emotions: 
anger, sadness