May I exchange this DVD player ?
neutral
user
Certainly . Do you have your receipt ?
neutral
assistant
Here you are .
neutral
user
Now , why do you want to exchange it ?
neutral
assistant
It won't play a DVD .
neutral
user
I'm sorry . I'll get you a new player .
sadness
assistant
At first , I thought it was me .
neutral
user
Okay , here's a new one for you .
happiness
assistant