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

Ex Input:
Sentence1: Your table is booked (ref# SCHAG4OI). What time do you need that taxi? Sentence2: The phone number is 01223240089, and the post code is cb17sr. Is there anything else I can assist you with? Sentence3: Thanks. That is all for now. Sentence4: Aylesbury odge guesthouse,I will book it for you,is there anything else I can do for you ? Sentence5: Are any a guesthouse? Sentence6: Okay. Please call us if we can help you further. We hope you enjoy your stay. Sentence7: the good luck chinese food takeaway is great. Shall i book it ? Sentence8: No I just need you to recommend one for me. Sentence9: I don't need you to book it, I just need the phone number and post code please. Sentence10: Hello, I am looking for a place to stay that has free parking in the South area. Can you help me with that please? Sentence11: What time would you like to dine, and how many will be in your party? Sentence12: Thanks, also looking for a restaurant in the same part of town in the expensive range. Can you recommend one? Sentence13: I'd like it to arrive in time to get us there before 12:15. Sentence14: Yes I have 3 guesthouses matching your criteria. Would you like to book one of them? Sentence15: Your black ford taxi has been booked and your contact number is 07103139053. Sentence16: I have four options ranging in price from cheap to expensive ranging in from 3 to 4 stars. Sentence17: There will be 6 of us. We'd like 12:15 on Saturday please. Sentence18: Please book the restaurant and I also need a taxi. Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Would you like to book a room at the acorn guest house? It is in the moderate price range like the Hamilton Lodge. Sentence2: Nope. I think that is all I need. Thanks for your help! Sentence3: Yes that will be fine. Sentence4: Your booking was successful. Your reference number is 1WRSIG9U . Is there anything else I can help you with? Sentence5: Happy to help. Have a great day! Good-Bye! Sentence6: I am sorry the booking was unsuccessful,can I help you find another place in the same area? Sentence7: Yes please. I'd like a room for 5 people on Monday for 5 nights. Sentence8: Yes, this guesthouse is open. Do you need help with booking? Sentence9: How about another hotel in the same price range? Sentence10: Howdy! Is the Hamilton Lodge still open? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I'm actually looking for something that has great architecture. Sentence2: There are three pizza huts. One in the city center, one in the east and one in the south. Which would you like information on? Sentence3: It doesn't matter. What is the food type and addresses? Sentence4: Actually, could you check if there is a pizza hut in fen ditton? If so, could I have the address and phone number? Sentence5: Old Schools is free to tour and the phone number is 01223332320. Is there anything else I can help you with? Sentence6: The Man on the Moon is a great concert hall. How does that sound to you? Sentence7: Happy to be of service. Thanks for using the Cambridge TownInfo centre, and have a great day! Sentence8: The school is fine. What is the entrance fee and phone number? Sentence9: There are 4 churches and a school. Do you have a preference? Sentence10: Thank you - that's all I need today. Sentence11: A friend was raving about this restaurant called Pizza Hut. Can you help me find it? Sentence12: I'm looking for an exciting place to go in the centre of town. Sentence13: Pizza hut city centre is located in the centre area and serves italian food and is in the cheap price range. Is any more information needed? Sentence14: Yes, there is! It's address is Cambridge Retail Park Newmarket Road Fen Ditton and it's number is 01223323737. Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:
Answer: (B) System