What can I do for you ?
neutral
user
Yes . There is something wrong with my watch . It stopped several hours ago .
neutral
assistant
Let me have a look . Oh , the watch ’ s battery is worn down .
neutral
user
How much is a battery ?
neutral
assistant
$ 50 .
neutral
user
How long will it last ?
neutral
assistant
About 2 years .
neutral
user
Here is the money .
neutral
assistant