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

[EX Q]: Sentence1: Let's go with the cheap one. I'll need a table for 7 on Sunday at 12:15 please. Sentence2: Can you try on saturday, 7 people, at 12:15 Sentence3: you're in luck I have two options for you. One is in the cheaper price range, the other is listed as moderately priced. Do you have a preference? Sentence4: Unfortunately the booking was not successful. Sentence5: Yes, you're booked for Saturday with reference number V54FG5X2 . The table will be reserved for 15 minutes. May I help with anything else? Sentence6: Thank you, goodbye! Sentence7: No, that's all I need. Thanks for your help! Sentence8: Yes I would like to find Spanish food in the center of town. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I can book you at the university arms hotel. It has a 4 star rating, free parking and wifi. Does this interest you? Sentence2: What will be the first day you will stay and how long will you be staying? Sentence3: I'm sorry but you'll have to book another day or a shorter stay. When would you like to stay? Sentence4: Yes. That would be great. Sentence5: Awesome, thanks! I think that takes care of everything I needed. Sentence6: Booking completed! Please look out for a Grey BMW, their contact number is 07130839627. Is there anything else I can help with? Sentence7: Certainly. I have many available. Is there a particular area you are looking in? I have several in the west and centre. Sentence8: Can you see if they have just 1 night available? Sentence9: I want to stay for 5 nights starting on Tuesday. Sentence10: Corpus christi is 2 pounds, which is in centre. Sentence11: Can you give me the entrance fee for one of the colleges in the centre? Sentence12: Okay great please enjoy your stay and don't hesitate to call us back if you need anything else. Sentence13: I am traveling to Cambridge and excited about seeing location attractions. Could you help me find a place to go, like a college? Sentence14: I need a taxi please between the 2 places. I want to leave the attraction by 2:30. Sentence15: Your booking was successful with a reference number of S1HTVV32 . Is there anything else I can do for you today? Sentence16: I'm also looking for a hotel in the centre. I don't want to stay in a guesthouse. It needs to be a hotel. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Great! Would you like to book a train to take you there? Sentence2: am going to stansted airport Sentence3: That's good. Book me in for 3 people and 4 nights starting Tuesday. Sentence4: Saturday, please. I will need the departure time, train ID, and price. Sentence5: Ok. Where do you need the taxi to pick you up at? Sentence6: Okay. Glad I could help. Have a great trip. Goodbye. Sentence7: I have you booked at the Hobsons House starting Tuesday for 4 days for three people. Your reference number is P4RWFGM2 . May I help you with anything else? Sentence8: I need to arrive at the airport by 14:45 on Saturday. Sentence9: Okay, what time would you like to leave? Sentence10: There are 9 results. Is there a certain time you'd like to leave by? We can narrow the results down that way. Sentence11: Can I be of any further assistance? Sentence12: What do you need to know about the Hobsons House guesthouse? Sentence13: Yes, I need a taxi please. Sentence14: i am planning a trip in cambridge Sentence15: I will bee a hotel called hobsons house. Sentence16: I think this train might work well for you. TR6193 leaves at 13:40 and gets in at 14:08. It costs 14.08 pounds. Can I book this? Sentence17: You are very welcome. Is there anything else I can help you with? Sentence18: No, that's all I need today. Thank you. Good-bye. Sentence19: Not right now. Thanks for all your help though. Sentence20: Nevermind. I will not need the taxi after all. Thank you for all your help. Please book a seat on TR6193 for me. Sentence21: thank you for your help today ! Sentence22: Where would you like to go? Sentence23: I would just like some general information before I book, what area is it in? Sentence24: i'm also looking for a train leaving from cambridge. Sentence25: It's located in the west. Would you like more information? Sentence26: Your train is booked for Sat your fee is 24.24 GBP and payable at station. Your ref. number is HGQGS7MX Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:
Answer: (B) System