Would you like a cup of coffee ?
neutral
user
Yes.That would be good .
happiness
assistant
Oh , no .
surprise
user
What's the matter ?
neutral
assistant
This machine is out of order .
neutral
user
You shouldn't have used the machine.Did you lose your money ?
neutral
assistant
I sure did .
sadness
user
You ought to complain.These machine are always out of order .
neutral
assistant