You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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Question: Sentence1: Yes, can I get a table for 4 on saturday at 15:15? Sentence2: Hi! Can you help me find a particular restaurant? Sentence3: unfortunately they are filled up for that time would you like me to reserve another time or would you like to choose another restaurant. Sentence4: Of course, there are 110 restaurants in town. Would you like me to search by restaurant name? Sentence5: The Varsity Restaurant serves international food in the center of town. Do you want me to book it for you? Sentence6: Excellent. I'll need the reference number. Sentence7: Yes, I am looking for the Varsity Restaurant. Sentence8: Yes, I will book a table for 4 on Saturday at 15:15. Question: Who has spoken the sentence 2? (A) User (B) System

Answer: Answer: (A) User

Question: Sentence1: Maybe you could try again? Sentence2: I am looking for a place to stay in cambridge in the moderate price range with 4 stars Sentence3: I found the restaurant you want. Do you want me to make reservation? Sentence4: I am having a hard time booking this, could I make sure the place you would like is the Pizza Express at Fen Ditton? Sentence5: There are 11 matches. Do you have a preference for hotel types? Sentence6: Yes, for 5 people on Friday around 13:45, please Sentence7: I am not able to book anything right now. Sentence8: Okay....well I'm over here waiting....don't forget the reference number too Sentence9: I will go ahead and book that for you now. Sentence10: Thanks for the room booking. Can you locate a restaurant for me, too? The name is pizza express Fen Ditton. Sentence11: The booking worked this time! The reference number is S31A87TV . Anything else today? Sentence12: No problem. If you need anything else just call us back. Sentence13: Yes it is, but if 13:45 time isn't working then 12:45 would also be acceptable. Sentence14: Great, thanks for your help! Have a good one. Sentence15: You have a room booked at the Warkworth House (ref# TP8X26LA). Can I help you with anything else? Sentence16: No, but it should be in the east. Sentence17: I have 3 guesthouses matching your request. Do you care about parking? Sentence18: Pick one and book me for 5 people lasting three nights starting Friday please. Question: Who has spoken the sentence 15? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: There will be 7 people staying for 2 nights beginning on Thursday. Sentence2: Unfortunately, there are no guesthouses that meet that criteria. In the area, there are 24 guesthouses, some of them cheap, some expensive. Can you narrow down your choices? Sentence3: All booked and ready to go! The reference number is RJVNE0PT . Sentence4: Yes, 1 night will work. I've booked the hotel for you, and your reference number is FIINUE5N . What else can I help you with? Sentence5: My attempt to book your party was unsuccessful. Would you like to try a different length of stay, or a different hotel? Sentence6: Sure, I can book that for you. How many people will be staying and for how long also arriving what day? Sentence7: Yes please, book it for 7 people. Sentence8: What is your departure site and time? Sentence9: That will be all. Thank you. Sentence10: Hi! I'm looking for a train to Norwich on Saturday. Sentence11: Wonderful. Enjoy your stay in Cambridge! Sentence12: From Cambridge and I want to arrive by 20:30. Sentence13: I have a train that would leave at 18:36 and arrive by 19:55. It's 79 minutes long and costs 14.08 pounds. Would you like me to book it? Sentence14: Would 1 night work instead? If it does could I get the reference number please? Sentence15: If there are no 1 star guesthouses, please find me the cheapest one that includes free wifi. Sentence16: Alexander bed and breakfast is a 4 star cheap guesthouse with free interenet and parking located in the centre. Does that work for you? Sentence17: Yes Alexander bed and breakfast that has a star of 4 would be great. Sentence18: I am also looking for a place to stay. Can you find a 1 star hotel for me that is a guesthouse? Question: Who has spoken the sentence 3? (A) User (B) System

Answer:
Answer: (B) System