Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Address and phone number, please Sentence2: Grafton Hotel 619 Newmarket road Fen Ditton. The phone number is 01223 241387. Sentence3: Grafton hotel restaurant is an expensive restaurant in the east part of town serving british food. Would you like their location? Sentence4: You're welcome. Goodbye. Sentence5: I am looking for an expensive restaurant that is in the east part of town. Sentence6: Enjoy your meal. Sentence7: Ok thank you and good bye Sentence8: Goodbye. Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System