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

Example Input: Sentence1: Not right now, but could I please get the address for the hotel? Sentence2: Certainly. All Saints Church is in postcode cb58bs. Can I help you with something else today? Sentence3: The Cambridge Belfry is located at back lane, cambourne. The phone number is 01954714600 and postcode cb236bw. Is the anything else I can help with? Sentence4: Thank you. Have a nice day as well. Good bye. Sentence5: Yes please, we'll be needing somewhere to stay the night. What can you tell me about the Cambridge Belfry? I've heard it's pretty nice, is that true? Sentence6: It is four stars. What else would you like to know? Sentence7: Hello i'm looking for places to go in cambridge please. Sentence8: No that's it, thank you. Sentence9: Does it have free parking? Sentence10: The Cineworld Cinema is located south at Cambridge leisure park, clifton way. Is there a specific activity you had in mind? Sentence11: I hope you enjoy your stay. Have a nice day. Sentence12: The Cambridge Belfry does have free parking. Would you like me to book it for you? Sentence13: I need a place in the centre. Sentence14: All Saints Church is in the centre area. The entrance fee is free. Would you like to book that? Sentence15: Yes, can I get the postcode. Sentence16: Have a nice day! Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I need a place to stay with free wifi. Sentence2: Location doesn't really matter as long as there's free parking available. Sentence3: Ok, I have several hotels. Any particular location? Sentence4: How about the Gonville Hotel located in the centre area of town? Sentence5: What is their postcode? Sentence6: Their postcode is cb11Iy, address gonville place, phone 0122336661 they have wifi and free parking too. Would you like me to book this for you? Sentence7: I have several available. What is your price range? Sentence8: Between $100-$300 per night. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: The only restaurant fitting such criteria is La Tasca. Sentence2: Thank you, goodbye. Sentence3: You are welcome. Good bye. Sentence4: What is the address, phone number, and postcode? Sentence5: The address is 14 - 16 Bridge Street, the postcode is CB21UF, and the phone number is 01223 464630. Sentence6: Please find moderately price restaurants that serve spanish type of food. Sentence7: Hello, I am looking for a moderately priced restaurant that serves traditional food. Sentence8: There are no restaurants matching your request. Would you like a different one? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System