I'm not satisfied with it .
neutral
user
Why not ? What's wrong with it ?
neutral
assistant
Sometimes it goes fast . And sometimes it goes slow . And the alarm doesn'twork , either .
neutral
user
Would you like another one ?
neutral
assistant
No . Can I have my money back ?
neutral
user
Hmm ... have you got a receipt ?
neutral
assistant
A receipt ?
surprise
user
Yes . I must see your receipt . You can't have your money back without receipt .
neutral
assistant