You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: I'd like to find an expensive restaurant in the north part of town. Sentence2: The restaurant should serve asian oriental food. Sentence3: You are welcome. Sentence4: Yes, I would like to be booked for a table for 8 on 19:45 on a Saturday, and could I also get the reference number? Sentence5: Your reservation has been made and the reference number is 3P2ALRY0 . Sentence6: I have one restaurant called saigon city on 169 high street chesterton chesterton. Would you like me to book for you? Sentence7: There are many restaurants in the North that match your description, what type of cuisine are you interested in? Sentence8: Thank you for your help. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Thanh binh is a nice restaurant that serves Vietnamese food and is in the cheap price range. Sentence2: That sounds great! May I have their phone number please? Sentence3: Thank you for using the Cambridge restaurant system, please call again. Sentence4: Okay, thank you for your help! Sentence5: How about vietnamese food, please? Sentence6: I am looking for a restaurant that serves Malaysian food and is in the cheap price range. Sentence7: thanh binh's phone number is 01223 362456 Sentence8: No matches found for cheap Malaysian food. Would you like something else? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Perfect. That's all for today! Bye! Sentence2: Hi, I'd like to book a taxi from Hakka to Sidney Sussex College. Sentence3: What time would you like to leave? Sentence4: I'd like to arrive at the college at 20:15. Sentence5: I booked that for you. The car is a white skoda and the contact number is 07158145955. Sentence6: Great. Have a nice day. Good Bye. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System