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 dine in the center of town, please. Sentence2: Could you give me the address and phone number for the Slug and Lettuce please. Sentence3: I'm looking for a place to dine that serves gastropub food. I want it to be expensive. Sentence4: You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence5: The slug and lettuce is located at 34 - 35 Green Street, postcode cb23ju. I'm sorry our system does not list their phone number. Is there anything else? Sentence6: I have two in the centre, the Backstreet bistro and The Slug and Lettuce. Would you like for me to make you a reservation? Sentence7: I wish you could provide their phone number. But other than that you've given me everything I need to know. Thank you goodbye. Sentence8: We have 3 options in Cambridge for expensive gastropub food. Would you prefer a place in the centre or in the east? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I'm leaving from Cambridge and going to Birmingham New Street. Sentence2: There appear to be hourly trains from 05:01 to 23:01. Do you know what day and time you'd like to travel? Sentence3: You are welcome. Have a great trip. Bye. Sentence4: Wednesday and it should leave after 18:00. Sentence5: Can you also direct me to some attractions in town in the east? Sentence6: Ok, I have booked you 3 seats on that train. Your reference number is MI5RMEHQ . You'll need to pay 225.3 GBP at the station. Anything else I can do? Sentence7: That sounds good. Can you book that for me for 3 people? Sentence8: I'm planning my trip there, but need to find a train for when I depart. Could you help me with that? Sentence9: The TR1766 leaves at 18:01 and arrives at Birmingham new street at 20:44. Would that be OK? Sentence10: The address is 5 greens road and the phone is 01223902168. Is there anything else that i can do for you? Sentence11: That would be perfect. Can you give me the address and the phone number? Sentence12: Sure. From where will you be departing, and what is your destination? Sentence13: No, that is all. Thanks for your help. Sentence14: Of course! There are several attractions in the east. I'd suggest Cambridge Artworks; it's a museum with free entrance. Would that work for you? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Graffiti is in the west area. Would you like me to see what is available in the east area? Sentence2: yes, I would prefer it to be in the west area. Sentence3: Okay. There is one option here for you. It is grafton hotel restaurant. Do you need a reservation? Sentence4: I need more information, such as when you would like to book it and for how many people? Sentence5: I would also like to get some expensive fusion food. Sentence6: What area would you like that in? Sentence7: Graffiti serves British food in the west area, are you ready to make a reservation? Sentence8: I am looking for a place to stay with free wifi. Sentence9: I need a restaurant in the east area, so that won't work. Sentence10: Yes please. Go ahead and book it for me. Thank you and good bye Sentence11: In the east side of town. Sentence12: How about a British restaurant instead? Sentence13: How about travellers rest restaurant located in the west side of town? Sentence14: We have 7 options that meet your criteria. Do you have a specific price range in mind or would you like a recommendation? Sentence15: The address is 138 perne road Sentence16: Not really, but can you give me the address for your favorite place? Sentence17: Is Graffiti in the same area as my hotel? I'd like to keep it to that area if possible. Sentence18: I prefer the Carolina Bed and Breakfast. It's a 4 star guesthouse in the moderate price range. Would you like for me to book a room for you? Sentence19: I'm sorry, I was confused. I need a british restaurant in the east side. Sounds like Graffiti won't work for me. Sentence20: There is nothing that meets that criteria, shall I run another search? Sentence21: Possibly, but first can you give me the exact address for Graffiti? Sentence22: Could you just give me the address for now? Sentence23: There are 6 to choose from. Do you have a preference for area? If not, then I recommend graffiti. Sentence24: Sure they are located at Hotel Felix Whitehouse Lane Huntington Road, is there anything else I can help you with? Question: Who has spoken the sentence 15? (A) User (B) System
Example Output:
Answer: (B) System