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

Sentence1: I have 5 optionsd available,all have WiFi Sentence2: Do you know if any of them offer free wifi? Sentence3: Sure! We have 18 4 star guesthouses, would you like a specific part of town or price range? Sentence4: I'm needing a 4 star guest house today. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

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: You are welcome. Thank you for calling the Cambridge TownInfo Centre. Good bye. Sentence2: Ok we have two guesthouses with that criteria, the Carolina Bed and Breakfast, and the Warkworth House. Sentence3: I'm looking for a moderately priced 4 star hotel. Sentence4: I was able to book you at Warkworth House, the reference number is VTZK341T . Can I help you with anything else? Sentence5: I need a reservation for 4 people for 5 nights starting on Sunday Sentence6: The hotel should include free parking and should be in the east Sentence7: No that is perfect. Thank you very much. Sentence8: We have no hotels with that criteria, but I can search for a 3-5 star hotel if you'd like. Question: Who has spoken the sentence 3? (A) User (B) System

Answer: (B) System