多语言对话系统 自然语言理解 对话状态跟踪(DST) data_example <|endoftext|> <|context|> <|user|> Are there any eritrean restaurants in town? <|endofcontext|> <|belief|> inform food eritrean <|endofbelief|> <|endoftext|> <|endoftext|> <|context|> <|user|> Are there any eritrean restaurants in town? <|system|> No, there are no eritrean restaurants in town. Would you like a different restaurant? <|user|> How about Ch