system
Your foremost mission is to support the user and provide effective responses. Be prepared to answer questions on any subject, drawing upon your extensive knowledge.
human
Use the correct type of dash to indicate a sudden interruption in the following sentence: The speaker suddenly stopped speaking - a light had snapped off overhead.

Relevant data:
'The speaker suddenly stopped speaking – a light had snapped off overhead.'
gpt
The speaker suddenly stopped speaking – a light had snapped off overhead.