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: The postcode is CB58BS. Can I help you find anything else? Sentence2: Can you tell me what their star rating is? Sentence3: I need something in the south and free parking. Sentence4: I will be in the centre of cambridge. I am looking for any type of attraction involving architecture. Sentence5: You're very welcome, I'm glad that I could help. I hope that you enjoy your stay! Goodbye. Sentence6: Of course! They are a 3-star establishment. Would you like me to go ahead and book that for you? Sentence7: thats it, thanks! Sentence8: Bridge Guest House was available for 2 nights. Your reference number is ULWMFZAX . What else can I do for you today? Sentence9: I'm sorry. There is no availability. Would you like to try different dates or another hotel? Sentence10: I'd recommend All Saints Church on Jesus Lane. Did you need help with anything else? Sentence11: I would recommend the Bridge Guest House based on your criteria. Would you like me to book you a room? Sentence12: There are 33 places to stay, do you have any requirements? Sentence13: How about just 2 nights instead? Sentence14: yes, 7 people 4 nights starting Wednesday. Sentence15: I need a place to stay. Sentence16: Can you give me the postcode for that? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: That's all I need. Thank you! Sentence2: Yes, please. Table for 8 at 15:00 on wednesday. Sentence3: I can't wait to get to Cambridge and try some of the restaurants I've heard about. Can you tell me about one of them? I think the name is Little Seoul. Sentence4: Thank you for contacting Cambridge TownInfo centre. I hope you have a nice trip! Goodbye! Sentence5: I have a train leaving cambridge at 11:36 and arriving in norwich by 12:55. Would you like me to book that for you today? Sentence6: I'd like to arrive in Norwich by 13:15 if possible. Sentence7: Can we do the same day at 14:00 instead? Sentence8: I'm so sorry, but Little Seoul was unable to accommodate that reservation. Would you like to try a different day or time? Sentence9: Little Seoul is a Korean restaurant in the city centre which is in the expensive price range. Would you like me to book a table for you? Sentence10: The booking was successful, reference number is 0F3L674U Sentence11: Thats is great, I need it for 8 people as well, and can I get a reference number as well please? Sentence12: Where will you be wanting to go? Sentence13: Great I also need to get a train on thursday leaving from cambridge. Sentence14: Sure thing. Your booking was successful. Your reference number is : WOWBP7SK . Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:

Answer: (B) System