<|user|> i need a expensive restaurant <|system_actions|> request slot food <|user|> i would like vietnamese food <|system_actions|> request slot food <|user|> be there any restaurant sever north american food . <|system_actions|>  <|user|> be that expensive ? <|system_actions|>  <|user|> yes , i would like to have the phone numb and postcode please .
request slot postcode,request slot phone,inform food north american,inform price range expensive