Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: You are welcome. Please call back if you need anything else. Sentence2: The phone number is 01223217300 and post code is CB20QQ. Sentence3: Do you need any further assistance? Sentence4: Great, thanks for your help. Sentence5: I want to find a hospital in town. The hospital should have the hepatobillary and gastrointestinal surgery regional referral centre department Sentence6: Addenbrookes Hospital is located at Hills Rd, Cambridge. They have the department you're looking for, would you like the phone number? Sentence7: That was all. Thanks Sentence8: I need the address, postcode, and phone number. Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System