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

Ex Input:
Sentence1: No that's all. Thanks. Bye! Sentence2: Yes, that's right. Which of the 12 options would you recommend? Sentence3: Yes, would you try 2 nights instead, please? Sentence4: That's great. Please make a reservation for 1 on Monday. I'd like to stay 3 nights. Sentence5: Your booking was unsuccessful. Would you like another day or a shorter stay. Sentence6: Are they expensive? I would like something nice. And do they have free parking? Sentence7: Please check for something expensive first. If you don't see one, then we can come back to that. Sentence8: Booking was successful. Reference number is : JAKCI7JO . Is there anything else we can help you with today? Sentence9: How about Archway House? It's at 52 Gilbert Road cb43pe, and the phone number is 01223575314. Would that work for you? Sentence10: Yeah, that's fine. Oh, and I need free parking! Sentence11: There is the Acorn Guesthouse that is located in the north side of town. Would you like me to make a booking? Sentence12: I hope you have a great rest of the day. Sentence13: Can you tell me about a nice guest house in your city? I don't care how much it costs. Sentence14: They're a moderate guesthouse with free wifi and parking. Would you like to book a room? Sentence15: So to clarify, you need a guesthouse with free parking, and a moderate price range is acceptable? If so, I have 12 different options for you. Sentence16: It looks like all of the places in the expensive price range are hotels rather than guesthouses. Would you like to consider a different price range? Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: We have nine expensive dining establishments on the west side. Cuisines offered are Thai, Indian, European, and British. Do you have a preference? Sentence2: Thank you. Can you please give me the reference number? Sentence3: The reference number is 5WHDPGHW .. Is there anything else I can assist you with? Sentence4: Okay I booked a table for 4 at 15:00 on Saturday at the Graffiti, an expensive British restaurant in the west area of town. Sentence5: I am interested at eating at an expensive place in the west part of town. Sentence6: No that will be all. Thank you so much for all of your help! Sentence7: Excellent. Have a good rest of your day! Sentence8: No I don't have a preference. I want to book for four people at 15:00 on Saturday. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: The Fez Club at 8 Market Passage is quite popular. Or are you interested in one of the other four? Sentence2: Can you help me find a train going to Ely on Monday? Sentence3: You're very welcome! Thanks for contacting Cambridge TownInfo centre, have a great day! Sentence4: I think that is all I need to know for now. Thank you. Sentence5: I have 6 nightclubs 5 in the centre and 1 in the south. Do you have a preference? Sentence6: The Fez sounds great. Can I get their phone number? Sentence7: For now, can you just give me the price and travel time of TR5167? Sentence8: The phone number is 01223519224. Can I help you with anything else? Sentence9: Can you find me a nightclub? Sentence10: When would you like to leave or arrive by? Sentence11: I would need to leave cambridge after 13:15 on Monday, please. Sentence12: I have 6 trains leaving after 13:15 with the earliest being TR5167 which leaves at 13:50 and arrives at 14:07. Would you like a reservation? Sentence13: I prefer a nightclub in the centre area. Sentence14: 4.40 pounds, and travel time is 17 minutes. Would you like to know anything else? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:

Answer: (B) System