Analyze the following tweet to determine the level of sadness expressed. The levels are: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
Tweet: @Skyscanner horrified to learn that I cant change/exchange by flight to Lisbon 6 weeks before departure!!!! #omegaflightstore £200