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

[EX Q]: Sentence1: Hi. Can you please help me find a restaurant that serves food from singapore ? I'd like it to be on the East side of town if possible. Sentence2: Thank you for using the Cambridge restaurant system. Goodbye. Sentence3: Yu Garden is located on the east part of town. Would you like the telephone and address? Sentence4: What is the address, phone number, and postcode? Sentence5: Can you help me find some Chinese food then? Sentence6: There are no restaurants serving Singaporean food on the east part of town. Sentence7: Thank you, goodbye. Sentence8: Yu Garden is located at 529 Newmarket Road Fen Ditton, C.B 5, 8 P.A, and the number is 01223 248882. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I'll be leaving from Leicester and want to go to Cambridge. Sentence2: Booking was successful, reference number is YN5MH1ZN . Anything else I can help you with? Sentence3: Where are you departing from and what is your destination? Sentence4: I need a hotel in the north that has free parking. Sentence5: There are 11 different hotels. To help narrow it down, can you tell me if there is a price range you prefer? Sentence6: All right. I need a booking for six, please, and the reference number. Sentence7: Yes it is. Sentence8: There are 91 trains leaving Leicaster to Cambridge after the specified time. How does Friday 11:09 sound? Sentence9: No thank you that will be all. Thank you for your help in booking my trip and stay! Sentence10: How about the Acorn guest house on 154 Chesteron Road? It's a moderate price range guesthouse that is rated 4 stars with free parking and wifi. Sentence11: Perfect. I'd like to book a 5 night stay for the six of us. Sentence12: Great. Is this hotel stay also starting on Friday? Sentence13: No problem! You have a wonderful day! Sentence14: I'm looking for a train leaving after 10:30. Sentence15: No not really, I would prefer a guesthouse type of hotel with free wifi though. Sentence16: I was able to book the train for you for 6 people. The reference number is 7QAMUGHQ . Do you need anything else? Question: Who has spoken the sentence 15? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: The price is 9.80 pounds and will leave at 8:11 and arrive at 8:58, which is 47 minutes travel time. Would you like to book a seat? Sentence2: Yes, that sounds good. Sentence3: You are welcome. Is there anything else I can do for you? Sentence4: Actually hold off on booking for now. Thank you for your help. Sentence5: No, that will be all. Thank you for all your assistance. Sentence6: I have 4 trains that arrive before 9:45. Would you like me to book TR8705 which leaves at 8:11 and arrives at 8:58 Sentence7: I am looking for a restaurant called Charlie Chan Sentence8: I am looking to leave Kings Lynn station and arrive by 9:45 Sentence9: yes please, for 1 person at 12:45 on Thursday, thank you Sentence10: Thanks! I also need a train to Cambridge on Thursday. Can you help me with that? Sentence11: Can you tell me your departure station and a time you'd like to either leave or arrive? Sentence12: You're all set! The reference number is NL81FN41 Sentence13: You're welcome! Let me know if I can help with anything else. Sentence14: What's the price and travel time for that train? Sentence15: I found Charlie Chan on Regent Street City Center. Can I book that for you? Sentence16: Is this also just for one person? Question: Who has spoken the sentence 12? (A) User (B) System
[EX A]:
Answer: (A) User