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

Sentence1: Yes, of course. How many tickets would you like booked? Sentence2: Where are you traveling to and from? Sentence3: I have reserved your table. Your reference number is TRQQXOBM . Sentence4: Thank you. Sentence5: The train departs Cambridge at 13:06. Sentence6: No, I think that's all I need today. Thank you for your help! Sentence7: I am traveling from Cambridge to Peterborough. Sentence8: Thank you for using this system. Sentence9: We have many trains that fit your needs. The latest one you could take would be the TR9792 which would have you arriving at 13:56. Sentence10: I have 2, one in the south and one in the centre of town. Both are cheap and serve portuguese food. Sentence11: Thanks for that, I am also looking for a train that should arrive by 14:15 and should leave on Thursday. Sentence12: Okay great. enjoy your travel and thank you for calling. Sentence13: Could you book a reservation for me? I would like a reservation for 6 people at 14:00 on Wednesday. May I also have the reference number? Sentence14: I'm looking for a cheap restaurant that serves portugese food. Sentence15: Booking was successful for TR9792, the total fee is 99 GBP payable at the station. Your reference number is : BKXNWE2O . Do you need any further assistance? Sentence16: Thank you. Can you please book that train for me? Sentence17: I need 6 tickets. Sentence18: OK, thanks. When does that train depart? Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: Sure! The phone number is 01223452587, the postcode is cb58bs, and that is in the centre area. Sentence2: That sounds great to me. Can I get the phone number, postcode, and area please? Sentence3: You are booked into Prezzo which is moderately priced on the west side. Your reference number is G2FIPHUL . Is there anything else? Sentence4: Great! I think you've covered it all. I don't need anything else. Thank you! Sentence5: Is there one that serves Italian food? Sentence6: You're quite welcome. Just let us know if you need any further assistance. Have a great day! Sentence7: There are none in the area that serves Welsh food, would you like to look for another type of cuisine? Sentence8: I'd like a moderate price range, please. Sentence9: I have found 5 attractions. They are all in the centre. Would you like to visit all saints church? Sentence10: There are 15 italian restaurants. Do you have preference in food price or area? Sentence11: I'm looking for a place to dine that serves welsh food. Sentence12: I am also looking for a place to go, anything with architecture. Sentence13: I don't have an area preference, but I would like to book a table for 6 people at 16:45 on wednesday. Sentence14: I have 5 moderately priced Italian restaurants. Do you have a preference on area, they are spread around the east, west, south, and centre. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: sure, there are five in that area. Sentence2: Okay can you please give me the address and phone number to one that you recommend? Sentence3: Hello, I am looking for a restaurant called hotel du vin bistro. Sentence4: Yes, do you happen to know what their price range is? Sentence5: I'll need a taxi to get to the restaurant from the college Sentence6: Thank you, I am also looking for colleges in the west area, can you give me more info on those? Sentence7: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence8: I have the Hotel Du Vin and Bistro located at 15 - 19 Trumpington Street. Their phone number is 01223227330. Is there anything else you'd like to know? Sentence9: When would you like to depart or arrive by? Sentence10: churchill college is in the west. it is free. their address is storey's way and their phone number is 01223336233. is there something else i can help you with? Sentence11: It is a moderately priced restaurant. Sentence12: I want to leave the college by 17:45. Sentence13: look out for blue audi and the contact is 07704105675 Sentence14: Thanks so much for all of your help today. I won't be needing anything else. Bye. Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User