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

Sentence1: Can you tell me more about gourmet burger kitchen? Where is it? Sentence2: No, that's all I need for now. you've been very helpful. Thanks. Sentence3: They are in the towns centre. Expensive but worth every penny. Would you like to book a table? Sentence4: How about the postcode and attraction type for Byard Art? Sentence5: Thanks, I'm all done here. Sentence6: I have that table reserved. Your reference number is K94DWSQN . Can I help you with a taxi or hotel room? Sentence7: You're welcome. Have a great day! Sentence8: Unfortunately, we do not have information on several of them. But, Byard Art, Wandlebury Country Park, and Sheep's Green and Lammas Land Park are all free admission attractions. Sentence9: I have booked you a taxi that will get you there by 13:15. The car type is a blue Tesla and the contact number 07664553144. Can I do anything else? Sentence10: Enjoy yourself.You can call us if you need anything else Sentence11: no, not really. What are entrance fees on the 8 attractions? Sentence12: What can you tell me about attractions in the south part of town? Sentence13: I need a taxi from Byard Art that will get us to the restaurant on time. Sentence14: We have 8 attractions in the south part of town. Do you have a preference of type? Sentence15: Yes please, a table for 6 people at 13:15 on Tuesday would be amazing. Sentence16: Postcode, cb21sj, and the type is museum. Is there anything else I may help you with? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: I just need to find a train that leaves at 19:30 for 5 people Sentence2: Is there another day you would like me to check? Sentence3: Hi, I'm looking for any information that you have on the Lensfield hotel in Cambridge. Sentence4: Nope that should be it thanks. Sentence5: I only have trains that leave at 20:24 and later on a Friday from Stansted airport. Will this time and day work for you? Sentence6: Alright, I booked 5 tickets for Saturday train your reference number is 1R61PO9r . You can pay for your tickets at the station. Is there anything else? Sentence7: Unfortunately, no trains leave at that time Sentence8: Unfortunately there are no trains that leave at this time. Sentence9: I'm staying for 2 days and it's just myself. What train can I take to depart from the stansted airport that leaves at 19:30? Sentence10: What are the other 4 times of departure for Saturday. I'll need bookings for 5 people and a reference number. Sentence11: Glad to be of service. Have a wonderful day! Sentence12: The Lensfield Hotel is an expensive, 3-star hotel in the south of town, with internet and parking. Would you like me to book it for you? Sentence13: Sure, the phone number is 01223355017. How many days will you be staying, what day do you need to arrive, and how many people will be staying? Sentence14: There are only 4 trains that leave on Saturday Sentence15: I'm actually looking for something on Saturday. Are there any trains on Saturday that leave at 19:30? Sentence16: Yes, please. Can you also give me the phone number? Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: I would like to visit a college in the centre please. Sentence2: just one person please. Sentence3: What type of attraction would you like to visit? Sentence4: Wow! That's one smart place. Pick one that you like! Sentence5: You're welcome. Have a great day! Goodbye. Sentence6: Arbury Lodge is located at 82 Arbury Road, in the north area of town. It's 4 stars and moderately priced. Would you like to book a room? Sentence7: Sounds good. How many people should I make reservations for? Sentence8: I have made your reservation for 1 person, for 4 nights starting on Sunday. Your reference number is RX0F3K8S . Is there anything else I can do for you? Sentence9: Thanks so much for the information. Good day! Sentence10: looking for arbury lodge guesthouse Sentence11: you have been assigned a white skoda and the contact is 07605405449. what else do you need? Sentence12: thanks. i'm also looking for some places to visit around town. Sentence13: Yes I would like a room for 4 nights starting from Sunday. I will also need the reference number please. Sentence14: I also need a taxi between them that leaves the hotel by 12:30. Sentence15: great, i have 13 you could visit! Sentence16: gonville and caius college has a free entrance fee. Their phone number is 01223332400. Is there anything else I can help you with today? Sentence17: gonville and caius college is my favourite. can i give you their contact? Sentence18: Yes please give me their entrance fee and phone number. Question: Who has spoken the sentence 15? (A) User (B) System
Answer: (B) System