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

Example Input: Sentence1: that is great! thank you for all your help. Sentence2: I need help finding an expensive restaurant in the centre, can you help me please? Sentence3: Thank you for calling and have a great day. Sentence4: I have found the backstreet bistro and the slug and lettuce, which one would you like more information on? Sentence5: Yes both are in the expensive price range Sentence6: I'd love to help. We have 33 expensive restaurants. Do you have a cuisine you'd prefer? Sentence7: Do anything of them serve gastropub food? Sentence8: I want to book a table for 4 people at 16:15 on a Tuesday please. Sentence9: Can I have the munber in your party and the day and time you would like to book? Sentence10: Great! Here is the address, 34 - 35 Green Street. Sentence11: Okay I was able to book you then at The Slug and Lettuce and your reference number is FSOF58OO . Sentence12: Yes, I'm looking for gastropub food. Sentence13: Thank you so much. That is all I need. Sentence14: Any one will be fine. I need the reference number please after its booked. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: They can be reached by calling 01223358966. Sentence2: Take care. Goodbye. Sentence3: How do I contact the Parkside, Cambridge police station? Sentence4: I'll need to address also. Sentence5: contact the Parkside, Cambridge police station Sentence6: No, thank you. Sentence7: The Parkside Police Station is located in Parkside, Cambridge and the Postcode is CB11JG. Is there anything else I can help you with? Sentence8: Help me, please, I was just the victim of a robbery! I need help right away! Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: TR1537 will be leaving at 19:35 and the ticket is 4.40 pounds. Would you like a ticket for this train? Sentence2: No, I don't need train tickets right now. Sentence3: I'm looking information about a train in Cambridge. Needs to arrive by 21:00 and leave on Tuesday. Sentence4: Not just yet. Can I get the cost and departure time? Sentence5: Yes. I am also looking for a 3 star hotel in the north. Sentence6: I have a Hamilton Lodge available in the north, with a 3 star rating. It's moderately priced. It's located at 156 Chesterton Road. Will this work for you? Sentence7: I'll be happy to assist you with finding a hotel. Would you like to get the train tickets first? Sentence8: TR1537 will arrive at 19:52. Would you like a ticket on that train? Sentence9: Where will you be traveling from and to? Sentence10: I will be going from Ely to Cambridge. Sentence11: Is it a guesthouse? I don't want to stay at a hotel. Sentence12: Yes it is. Would you like me to book that for you. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System