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

[EX Q]: 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No thank you, goodbye. Sentence2: I'm sorry, there are no Korean restaurants in the north part of town. Can I help you find anything else? Sentence3: Thank you for using our system. Good bye Sentence4: How about any area? Sentence5: I would like a restaurant in the north part of town that serves korean food Sentence6: What is the address and price range? Sentence7: Little Seoul is at 108 Regent Street City Centre and is an expensive restaurant. Do you want the phone number? Sentence8: little seoul is in the centre and serves korean food Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: How many tickets would you like? Sentence2: Ok, is there anything else I can help you with today then? Sentence3: Yes please, go ahead and book that. Sentence4: Yes, I also need to book a train to Kings Lynn that leaves after 8:30 on wednesday departing cambridge. Sentence5: I need a guesthouse in the north to stay at. Sentence6: And how many will be staying? Sentence7: That was all thank you. Sentence8: THe first train after 08:30 is TR2831, it leaves at 09:11 and arrives at 09:58, I can book you if you like. Sentence9: I was able to book that for you. Your reference number is X5NGAVNB . Anything else I can assist you with? Sentence10: Does it have free parking? Sentence11: Three people, 4 nights, thanks! Sentence12: I do not need to book. Sentence13: No it does not. How about the Hamilton Lodge guesthouse? It is moderately priced and has 3 stars. Would you like me to book it for you? Sentence14: Yes please. I need it for saurday, sunday, monday and tuesday please. Sentence15: Alright how does the avalon guesthouse sound? Sentence16: You are welcome! Enjoy your stay. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System