why missing "assistant" here

[feixyz10]

qwen.cpp/qwen.cpp

Line 321 in 86547f1

oss_prompt << "\n<|im_start|>user\n" << history[i] << "<|im_end|>\n<|im_start|>" << history[i + 1] << "<|im_end|>";

Would'nt it be like this:

oss_prompt << "\n<|im_start|>user\n" << history[i] << "<|im_end|>\n<|im_start|>assistant" << history[i + 1] << "<|im_end|>"