You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Addenbrookes Hospital is located on Hills Rd, Cambridge. Is there a particular department you'd like the phone number for? Sentence2: You are welcome. Goodbye. Sentence3: Am looking for the Addenbrookes Hospital Sentence4: No, but do you have the postal code by any chance? Sentence5: No, that's all. good bye. Sentence6: The postal code is CB20QQ. Is there anything else I can help you with? Question: Who has spoken the sentence 1? (A) User (B) System
A:
Answer: (B) System