Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: my husband lost £800 when he booked an apartment through @Airbnb that didn't exist... @AirbnbHelp didn't care  #airbnbnightmare
This tweet contains emotions: 
anger, disgust, fear, sadness