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

Sentence1: Reference number is 29IN9CT3 for the acorn guesthouse. Sentence2: Sounds great if it is portuguese. I'll take a reservation for 7 people at 20:00 for the same day. Sentence3: Okay, how about the Acorn Guest House in the north? Sentence4: There is. How does Nandos City Centre sound? Sentence5: Okay, it was my pleasure to assist you! Bye! Sentence6: No, that's all I needed today. Thank you for your help! Goodbye! Sentence7: do you have one the is portuguese food ? Sentence8: I'm looking for information on 4-star rated guesthouses in Cambridge Sentence9: You're all set. Your reference number is 6R5W1RRE and your table will be reserved for 15 minutes. Anything else? Sentence10: I suggest the dojo noodle bar, an asian oriental restaurant, would you like to make a reservation? Sentence11: Sure. Can we spend 5 nights starting on Sunday? I am going to need room for 7 people. Sentence12: I have a number of 4 star guesthouses available, would you like to book one in a particular area? Sentence13: I would also like to eat somewhere cheap in the middle of town. Sentence14: Not really. Could you suggest one with free parking? Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: That train departs at 05:29. Sentence2: It appears that the Curry Garden meets your needs! Would you like me to book that for you? Sentence3: There are many options for expensive dining. Sentence4: Yes, please make reservations for 5 people at 16:45 on Monday. Sentence5: Booking was successful. The table will be reserved for 15 minutes. Reference number is : J8918H0X . anything else i can help you with? Sentence6: What day will you travel? Sentence7: Thank you for contacting us and have a nice day. Sentence8: I would like to arrive by 11:00. Could you give me the departure time and train ID? Sentence9: Thank you. That is all that I need. Sentence10: Thanks. I also need a train from Bishops Stortford to Cambridge. Sentence11: Not really, as long as it is open on Monday and has room for 5 people. Sentence12: Is there a departure time? Sentence13: There are a number of expensive Indian options. Is there a specific part of town you were looking for? Sentence14: I will be traveling on Monday. Sentence15: I need a place to eat that is expensive. Sentence16: OKay, is there a certain time you need to leave? Sentence17: Specifically, I would like an Indian restaurant. Sentence18: I can suggest the TR4448 arriving by 06:07. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: I would recommend the Ugly Duckling restaurant. Would you like a reservation? Sentence2: What day will you be checking in? Sentence3: I'm looking for an expensive Chinese restaurant. Sentence4: Yes please book for 1 night 1 person. I also need a taxi to go from the hotel by 14:15 to the restaurant. What is the car & contact number? Sentence5: I have made that taxi and you should expect a red lexus. The contact number for the taxi is 07465471381. Sentence6: I'd recommend the University Arms Hotel, it's an expensive 4 star hotel in the centre. Can I book a reservation for you? Sentence7: No, I do need wifi though. Sentence8: There is no preference. Sentence9: Great, I have several options for you. Two are in the south. Sentence10: Area does not matter. Pick one for me. Sentence11: Unfortunately, to book you a room I would need to know the day you want to start your stay. What day would that be? Then we can get a taxi. Sentence12: Can I just get the address for now? Sentence13: You know what I change my mind. I'll book later. I still need a taxi from University Arms Hotel leaving at 14:15 to the Ugly Duckling. Sentence14: Their address is12 St. Johns Street City Centre. Was there anything else you needed to know? Sentence15: your welcome, have a great day! Sentence16: I have 3 that match your criteria, is there an area you are looking to stay in? Sentence17: thank you I think that will be all for today. Sentence18: I'm also lso looking for a place to stay. The hotel should include free parking and should have a star of 4. Question: Who has spoken the sentence 9? (A) User (B) System

Answer: (B) System