I will give you multiple text parts that belong to the same text. The text is a transcript of a conversation between the Agent and the NAME_1.  After I have send you each text part, reply with "empfangen". At some point I will reply with "fertig". If I write "fertig" respond with the summary. Only summarize if I wrote "fertig". Summarize the text very concise in German language once I entered "fertig". Use 'NAME_1' and 'Agent' if you need to refer to the speakers. Reply with a summary and not with Agent, NAME_1 speaker turns.