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

[EX Q]: Sentence1: Id is TR0625, travel time is 79 minutes and you will arrive by 22:55. Anything else? Sentence2: Actually, could you help find a train as well? To Norwich? Sentence3: I found a train from cambridge to norwich at 05:36 on Friday, will that work? Sentence4: Sunday would be good. Sentence5: No, you've answered all of my questions. Thanks so much for your time. Bye. Sentence6: The Acorn Guesthouse is a 4 star hotel located in the north side of town. It includes free internet and parking. Would you like me to book it for you? Sentence7: I need to leave after 21:30, is there anything closer to that time? Sentence8: Thank you, and thanks again for using our free service. Sentence9: I am trying to find the Acorn Guest House. Sentence10: No, just leave after 21:30. Will you give me the travel time, arrival time and the Train ID? Sentence11: No, thanks. I will go ahead and book it myself. I think I have all the information I need. Thank you. Sentence12: Is there a time you need to arrive by? Sentence13: Yes there are 14 trains. Which day would you like to depart? Sentence14: Thank you for using our service, have a nice day. Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Can you check the availability at the University Arms Hotel for five people? Sentence2: You are welcome. Sentence3: Sure thing! Your reference number is LW8PBD97 . Sentence4: Thursday please. Sentence5: Thank you so much, that is all that I need for now. Have a wonderful day. Sentence6: What day would you like to book? Sentence7: Actually for 5 nights and there will be 5 of us staying Sentence8: For just one day? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Thank you, that was all I needed today. Goodbye. Sentence2: how about the oak bistro? It looks lovely Sentence3: departure from Cambridge. Sentence4: Can you also find me a train that goes to Peterborough on Wednesday? I need to arrive by 10:45. Sentence5: Ok, that sounds good, I need to book a table at 18:00 on Tuesday for 6 people, please. Sentence6: What time would you like to leave at? I have 5 trains leaving between 5:06 and 7:06. Sentence7: I was thinking somewhere in the centre of town. Sentence8: Hi. Can you help me find a moderately priced restaurant? Sentence9: The TR0467 leaves at 9:34 and arrives at 10:24. The cost is 16.50 pounds. Does this work for you? Sentence10: Your table is reserved, reference #9SJWCXZA . Can I be of any further assistance today? Sentence11: where are you travelling from? Sentence12: there are a variety of moderately priced restaurant in what area do you prefer? Sentence13: Thank you for using our services. Have a great day! Sentence14: Which train arrives closest to 10:45? I don't want to wait around too long after I arrive. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System