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

[Q]: Sentence1: TR7966 departs at 5:40. Sentence2: Your booking was successful. Reference number is : M0ZETXSZ . Is there anything else I can help you with? Sentence3: There are 33 different lodging options in town. Do you have a preference for type, area, pricerange, or star rating? Sentence4: Type doesn't matter. I want it to be cheap and in the north. With a 4 star rating. Sentence5: Great. Now I need a place to stay. Sentence6: The worth house is located in the north and cheap, would you like a reservation? Sentence7: Yes, that works. Can I get the train id number and the price please? Sentence8: I need a train to stansted airport from cambridge please. Sentence9: What area and price range are you looking for? Sentence10: What is the departure time of that also please? Sentence11: That's great. Have a safe trip. goodbye. Sentence12: It should be a 4 star hotel. Sentence13: Ok, what day will you be traveling? Sentence14: the train Number is TR7966, it will cost you 10.10 pounds. Sentence15: No thank you. I am all set. Sentence16: Is it rated 4 stars? Sentence17: Yes it is a four star. It also has free internet and free parking. When were you planning your stay? Sentence18: book it for 7 people and 5 nights starting from saturday Sentence19: Thursday. I need to arrive by 12:45. Sentence20: The closest to thing I can find is a train leaving at 5:40 on Thursday. It arrives at Stansted Airport at 6:08. Is this okay? Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: maybe, give me the address of one please Sentence2: There are several college's in the centre. How about Saint Catharine's College? It is on King's Parade and has free admission. Sentence3: I have train TR3343 arriving at london kings cross tuesday at 7:00. Shall I book that for you? Sentence4: Hi, I'm trying to find a place to go in the centre. A college would be fun to visit! Sentence5: Where will you be departing from, and what day would you like to travel? Sentence6: Yes, I need 4 tickets please. Please send me the reference number. Sentence7: Great! I would be happy to help you find one. Are you looking for one with free admission? Sentence8: Have a nice day and thank you for contacting us. Sentence9: Your tickets have been reserved, and just to clarify, that train departs at 07:00, and arrives in London, Kings Cross at 07:51. Wouldn't want you to miss the train! Ref#: AQDCG6N8 Sentence10: I'll be departing from Cambridge, and would like to leave on Tuesday. Sentence11: Thank you. I also need a train to London Kings cross, arriving by 9 Sentence12: OK thank you that is all I needed today. Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Okay, how about a booking for 1 night? Sentence2: Unfortunately, they do not have availability for that long a stay. Would you like to try for a shorter stay or different day? Sentence3: No thank you that's all the information I need today. Sentence4: I was able to book 1 night at hobsons house for Friday. Your reference number is R87K52QJ . Sentence5: Alright then. Goodbye. Sentence6: I found four hotels do you have any other requirements? Sentence7: You're welcome! I hope you enjoy your stay in Cambridge! Goodbye. Sentence8: Hobsons House matches your preferences. Would you like me to book a room? Sentence9: Actually, I'm not quite done. Would you please book the hotel for 8 people, 4 nights? We'll be arriving on Friday. Sentence10: Hi! Can you help me find a hotel somewhere on the west side of town please? Sentence11: Thank you very much. That is all I need! Sentence12: Yes, the hotel should include free wifi. Question: Who has spoken the sentence 9? (A) User (B) System
[A]:
Answer: (B) System