Room Service . May I help you ?
neutral
user
This is Room 603 . I'm afraid that the heating system doesn't work . It's very cold here .
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assistant
Have you switched on the radiator ?
neutral
user
Yes . I have switched it on for a long time . The room is still very cold .
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assistant
We're terribly sorry for that . We'll send our staff io fix it now . Or do you want to change your room ?
neutral
user
I prefer not to move first .
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assistant
OK . Is it convenient for us to come now ?
neutral
user
Yes , please .
neutral
assistant