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

Ex Input:
Sentence1: i am looking for information in Cambridge. Sentence2: I can certainly help you with that! What do you want to know? Sentence3: The hotel should have a star of 4 and should include free parking. Sentence4: I'd like to stay at a guesthouse that offers free wifi. Sentence5: The Alexander bed and breakfast is a great place. Do you need a reservation? Sentence6: Acorn Guest House would be perfect for your needs. Sentence7: yes, please. 6 people for 3 nights starting on thursday. Sentence8: Do you have a price range or area preference? Because if not, how about a and b guest house located in the east and moderately priced. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: El Shaddai is a guesthouse. Anything other questions about them? Sentence2: Yes, they have free parking. Would you like me to book you a room? Sentence3: Whoa whoa, easy there tiger, Lets narrow the search down first. In the center, 0 stars, cheap and it can be a hotel or guesthouse. Sentence4: Yes I need a chinese restaurant. Sentence5: ok for how many people and when are you planning your stay? Sentence6: I am looking for a restaurant that sell seafood,will prefer one in the center of the city. Sentence7: ok what location? Sentence8: Do they have parking? Sentence9: Yes, I'd like to travel on Wednesday. I'll need to arrive by 8:00. Sentence10: It should be in the same area? Sentence11: I would like a train into Cambridge from Stevenage. Sentence12: Is El Shaddai a guest house or hotel? Sentence13: OK. Is there anything else I can help you with today? Sentence14: No. That's everything I needed and then some, actually! Thanks, take care! Sentence15: Okay, is there anything else I can help you with? Sentence16: No, I don't need a chinese restaurant after all. Thanks for looking. Sentence17: All set. You are booked for 7 people on TR9448. You reference number is B1Q6DDTE . Can I help with anything else? Sentence18: i only have one option can i book it for you? Sentence19: No, I don't need to. I was just curious about it. Thank you for all of your help. Sentence20: The TR9448 arrives at 06:43. Would you like me to book a ticket for you? Sentence21: Yes, I need a hotel as well. Sentence22: Is there a specific day and time you would like to travel at? Sentence23: I'm sorry, there seems to be an error. Can you please restate your request? Sentence24: How about el shaddai? Fits your request perfectly. Sentence25: Thank you for calling. Have a great day! Sentence26: Yes, please book 7 seats. Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Please just tel me which one you think best, then provide the area it is in and the phone number. Sentence2: queens' college is pretty great. It's in the west. Their number is 01223335511. Sentence3: The arrival time for that train is 18:10, is there anything else I can help you with? Sentence4: What day would you like to travel, and what time would you leave or arrive by? Sentence5: Have a great day! Sentence6: What is the arrival time? Sentence7: Sure, there's lots to do here? Is there a certain area or type you're looking for? Sentence8: Yes, book me for 1 please. Sentence9: Hi, I'm planning a trip to Cambridge. Can you suggest some places I could visit in town? Sentence10: I would like that the train should leave on saturday and after 16:15. Sentence11: No. Thank you Sentence12: What is the train ID? Sentence13: What's your favorite college to visit? I'm not picky about the area. Sentence14: Alright, TR4216 leaves at 17:21. Would you like me to book you passage? Sentence15: There are 18 of them in the city. Do you mind an entrance fee or would you prefer one that's free? Sentence16: The train ID is TR4216. Can I help you with anything else today? Sentence17: That's fine. I also need a train from Cambridge to stevenage. Sentence18: You're all set. Your reference number is R55DTSWS and there will be a 10.24 GBP fee due at the station. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User