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

[EX Q]: Sentence1: Tuesday, going to Cambridge please. Sentence2: The TR8685 arrives by 5:52 and costs 4.40 pounds. Can I book some seats for you? Sentence3: You're welcome. Have a great day. Goodbye. Sentence4: The Broughton House Gallery is located at 98 King St and has free admission. Sentence5: The train should leave on tuesday and should go to cambridge and arrive by 10:15 Sentence6: Thank you, that sounds fine. I see you have included the address and the entrance fee. That's all I need. Thanks very much. Sentence7: Great thank you I also am looking for some place to go in the centre of town. Sentence8: Please for 8 people. Sentence9: I'm looking for a train that arrives by 10:15 and departs from Ely Sentence10: Your booking was successful. The total fee is 35.2 GBP pounds payable at the station and your reservation number is 1OBF5WF2 Sentence11: No problem! What day would you like to leave? Sentence12: Any departure time in mind? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I don't have any guesthouses listed in that price range. Would you like something in the moderate price range possibly? Sentence2: Will you be departing from cambridge? Sentence3: Sure I have a train arriving at 14:10 on a Tuesday. Would you like to book a seat? Sentence4: Okay, I made you a reservation at the Acorn Guest House. Check in is Friday for a party of 5 and your reference is CGDK1YT1 . Will that be all today? Sentence5: I just need to know how long the travel time it. Sentence6: Great. That is all. Sentence7: Ok! Have a great day! Sentence8: Sure check moderate for me. Sentence9: TR0743 is leaving cambridge at 13:21 and the cost is 12.80 pounds, how many tickets will you need? Sentence10: Might I recommend the Acorn Guest House? It's a moderately priced, 4-star guesthouse in the north area. Sentence11: Yes please. May I have the departure time, train id, and price? Sentence12: Yes, I will be departing from Cambridge. I also need to leave on Tuesday. Sentence13: I need to find a train that goes to stevenage and arrives by 17:30. Sentence14: I would also like to find an expensive guesthouse. Sentence15: The travel time is 49 minutes. Sentence16: Sounds great, can you please book me for 5 people and 4 nights starting on friday? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Sure, 4 people for 5 nights beginning Sunday. Sentence2: ok no preference for area any guest house Sentence3: No that doesn't matter. Please just recommend a guesthouse for me that has both parking and internet Sentence4: Sure, I can assist you with that. Was there an area of town you were looking for? Sentence5: Is there a price range you'd prefer? Sentence6: I'm sorry but I am unable to find anything with those specifications. Would you like to try anything else? Sentence7: I am looking for a place to stay with a guesthouse set up and free parking. Sentence8: There are quite a few choices available for guest houses with free parking and internet. May I suggest the acorn guest house in the north part of town? Sentence9: Okay I have that booked for you. Is there anything else you need? Sentence10: I am looking in the Cambridge area. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:
Answer: (B) System