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: No, thank you. Sentence2: The postcode of Addenbrookes Hospital is CB20QQ, and the main phone number is 01223245151. Are you looking for a particular department? Sentence3: I need to know where the Addenbrookes Hospital is please. Sentence4: You're very welcome! Goodbye. Sentence5: I need the postcode and phone number. Sentence6: Addebrookes Hospital is located at Hills Rd, Cambridge. Is there anything else you require? Sentence7: No specific department. I will call Addenbrrokes Hospital, CB20QQ at phone number 01223245151. Sentence8: Do you need any further assistance? Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System