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

[EX Q]: Sentence1: Sure, what will your arrival station be? Sentence2: Thank you! What kinds of restaurants are available? Sentence3: Yes, please. For Friday. 3 people at 16:30. Sentence4: Oh thank you so much. I also need a train from Bishops Stortford, can you help with that? Sentence5: Your welcome, Have a nice day. Sentence6: sure, i have 9 options for you Sentence7: Sure. The Graffiti is a restaurant that serves British food. The phone number is 01223277977. Would you like to make a booking? Sentence8: It is a total time of 38 minutes for the trip. Anything else that I can assist with? Sentence9: The departure time is 09:29. Is there anything else that I can help you with today? Sentence10: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 86G11ZVP . Sentence11: I will be heading into Cambridge. I will need it for Friday arriving by 12:00. Sentence12: Are there any expensive places to dine in the West? Sentence13: No that's ok. I just need the travel time. Sentence14: TR2083 will arrive at 10:07. Want to book? Sentence15: Nothing else today. Thanks so much for your help. Bye. Sentence16: Yeah, can you confirm the time I need to be at the station? Sentence17: I see british, european, and indian available. Sentence18: Can you tell me about one of the restaurants that serves British cuisine? Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: There are 33 entries for expensive restaurants in the centre. Would you like to hear some options? Sentence2: As far as thai food goes, I happen to have one place. Good thing is they are very highly recommended. It is called Bangkok City. Would you like a reservation? Sentence3: Hello, I am looking for a restaurant. The restaurant should be in the centre and should serve modern eclectic food. Sentence4: Cambridge Contemporary Art is very nice. It's in the centre part of town, like the restaurant, and it's free to get in. Can I help you with anything else? Sentence5: No, that is all. Goodbye. Sentence6: Fantastic, can you also find me a museum attraction? Sentence7: Any type would be fine I just need to know the area and entrance fee of one you would recommend. Sentence8: Can you try booking at 15:45? Sentence9: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 1NY7QJKY . Sentence10: Are any of them modern eclectic food? Sentence11: Yes, I'd like to book for 2 people at 16:45 on tuesday. Sentence12: Okay. Have a lovely day then. Sentence13: Dang...How about some Thai food instead Sentence14: There are several wonderful museums in town. Is there a specific area you prefer? Sentence15: Are there any other expensive restaurants in that area that may be nice to visit? Sentence16: There are no restaurants in that are would you like to try a different area? Sentence17: No, there doesn't seem to be any modern eclectic places at all. Would you like a different type of cuisine? Sentence18: I'm sorry, but they seem to be all booked up at that time. Would you like to try a different day or time? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: At 20:16 a train leaves for Cambridge duration of which is 79 minutes. Sentence2: I have about 19 different trains. Do you have a certain time you would like to leave after or arrive by? Sentence3: Allenbell does indeed have wifi. Would you like a reservation? Sentence4: Can you help me find a train leaving Tuesday from Norwich? Thanks. Sentence5: That sounds great, I want to find you the perfect place! Is pricing a factor, do you have a part of the city in mind? Sentence6: I want to leave after 20:15. Sentence7: I don't need a specific area. What do you recommend? Sentence8: I need more information please. What area of town? Sentence9: Booking was a success! Your reference number is: XJGR0GCN . Sentence10: Can you help with info on places to stay? Sentence11: The allenbell in the east is a cheap hotel with 4 stars. Sentence12: Yes please. I'm celebrating my anniversary with myself, so I need a room for 1 starting Tuesday for 4 nights. Sentence13: I would like a really nice place because I'm celebrating my 10 year anniversary. Something cozy and romantic. Sentence14: Booking was successful, the total fee is 17.6 GBP payable at the station. Reference number is : UK9225HY . Is there anything else I can do for you today? Sentence15: Yes, I can help with that. What are your preferences of area, price range, and type of accommodation? Sentence16: Does it have free wifi? Sentence17: Price is no concern for me. I need it booked for 1 person for 4 nights starting on Tuesday please. Sentence18: I would like to making a booking for one please. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System