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: No that's all I needed. Thank you! Sentence2: Mumford Theatre sounds great. May I have their address and entrance fee, please? Sentence3: The bridge guest house phone number is 01223247942. Can I help you with anything else? Sentence4: Hi, I'm traveling to Cambridge and I'm excited about tourist attractions. I'm looking for theatres in the centre of town. Sentence5: Can I please get their phone number as well? That's all I'll need for the day. Sentence6: I have many. May I suggest either The Cambridge Arts Theatre or Mumford Theatre? Sentence7: Unfortunately I am unable to find information on the entrance fee but the address is anglia ruskin enterprise, east road. Their phone number is 08451962320 Sentence8: Sure. The Bridge Guest House is at 151 hills road. Did you need any other assistance? Sentence9: Alright, thank you. I'm also looking for a particular hotel. It's called the Bridge Guest House, could you help me find it? Sentence10: You are very welcome, anytime. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I don't need reservations I just need the address and price range. Sentence2: That won't work for me. When does the next one leave on Tuesday? Sentence3: I need a room. Do not need wifi or parking. Sentence4: Yes and Can you book it for me and get a reference number ? Sentence5: Certainly. What area of town would you like to stay in? Sentence6: Yes that time works. Please book it. What is the train ID? Sentence7: I am planning my trip to Cambridge and need a train leaving Peterborough after 21:45. Sentence8: I don't feel comfortable giving that to you. I'll book on my own. Can you just give me info on a place to stay? Sentence9: The first train leaves at 21:48. Sentence10: Enjoy your visit. Sentence11: The train ID is TR8054. May i have your details (Name, Phone number, ID, email) so i can go ahead and make the booking for you. Sentence12: Thank you that will be all! Sentence13: I have one leaving at 22:19. Would you like to book it? Sentence14: moderate price range. Located at 63 milton road. Sentence15: Okay, I have the alpha-milton guest house in the north area. Will that work for you? Sentence16: On what day will you be checking in, for how long, and for how many people? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User