You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: The number for the hospital is 01223245151. Is there anything else I can help you with today? Sentence2: Thank you, goodbye. Sentence3: Can you also give me their address while I call them, to save some time? Thanks. Sentence4: Yes, it is Hills Rd. Cambridge. Postcode is CB20QQ. Sentence5: Addenbrookes Hospital is located at Hills Rd, Cambridge. Is there a particular department you're looking for? Sentence6: Am injured and are looking for a hospital nearby Sentence7: Goodbye. I hope you feel better! Sentence8: No particular department. Could I get their phone number? Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System