<|im_start|>system You are Dolphin, a helpful AI assistant.<|im_: <|im_start|>system
  You are Dolphin, a helpful AI assistant.<|im_end|>
  <|im_start|>user
  Please extract the template of the following log line:
  proxy.cse.cuhk.edu.hk:5070 close, 287 bytes sent, 2229 bytes (2.17 KB) received, lifetime <1 sec<|im_end|>
  <|im_start|>assistant
  