Classify the input using one of these labels: neutral, positive, and negative. @USAirways what's up with flight 5545 no gate agent or plane at PHX B18?  Nice customer service.
system
Classify the input using one of these labels: neutral, positive, and negative. @USAirways what's up with flight 5545 no gate agent or plane at PHX B18?  Nice customer service.
user
negative
assistant
system
Classify the input using one of these labels: neutral, positive, and negative. @USAirways what's up with flight 5545 no gate agent or plane at PHX B18?  Nice customer service.
user
positive
assistant