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

[EX Q]: Sentence1: Yes, how about a museum in the centre? Sentence2: What is their address? Sentence3: I want a cheap restaurant that serves polynesian food. Sentence4: How about italian? Sentence5: I need it to arrive at the restaurant by the booked time. Sentence6: You are booked and your reservation number is Q7YR4YLN Sentence7: Looking now La Raza has a few openings, how many people? Do you have a date and time in mind? Sentence8: The castle galleries is a free museum in that area. Sentence9: I am afraid I have none matching your request. Would you like to try another type of food or area? Sentence10: Hi, I'm looking for entertainment attractions that are available in the centre. Sentence11: Can you help me get a taxi? Sentence12: There are no entertainment attraction located in the centre. Would you like me to check different areas? Sentence13: Of course. I need the time of travel, departure location and the destination. Sentence14: great, i have 69 options for you in that area! Sentence15: The la raza serves spanish food. Its cheap and in the centre. Would you like me to book you a table there? Sentence16: Your taxi is a blue skoda under the contact number 07244814493. Is there anything else? Sentence17: Can you try spanish food instead? Sentence18: You're welcome, glad I could help. Sentence19: Yes! Please do. Sentence20: I'd like it for Saturday at 17:45, just one person. Sentence21: That is all thanks. Sentence22: I am also looking for a restaurant in the same area as the attraction. Sentence23: There's nothing that serves spanish food in the cheap price range in the centre of town? Sentence24: unit su43, grande arcade, saint andrews street anything else i can help you with? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I'd like to find a train going to Cambridge that leaves on Sunday. Sentence2: Okay. It's a 3-star guesthouse in the north area with no internet or parking. Is there more you would like to hear? Sentence3: I would be leaving from Peterborough. I need to arrive in Cambridge by 19:30 though. Sentence4: My departure time is flexible. Sentence5: The earliest train is TR3782 which leaves at 05:19, would you like me to book some tickets for you? Sentence6: That sounds great. Can I just get the postcode please? Sentence7: No, I believe that is everything. Thank you. Sentence8: I am also looking for a hotel called alpha-milton guest house. Sentence9: Ok, and where are you departing from? Sentence10: No, that won't be necessary. I would like to get the price, though. Sentence11: Not a problem, please contact us again if you need any further assistance. Sentence12: Of course. The price for the train running from peterborough to cambridge on Sunday is 13.20 pounds. Is there anything else I can assist you with? Sentence13: The post code of the alpha-milton guest house is cb41xa. Is there anything else I can assist you with today? Sentence14: Okay, there are a few trains available. What time would you like to depart? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes please book it for 8 people and provide the reference number. Sentence2: Ok, what day are you traveling? Sentence3: Great, thank you so much! That will be all for today. Sentence4: Yesm there is a train available, the TR7733, and leaves at 17:50. Would you like me to book this? Sentence5: I would be happy to get that information for you. Can I help you find a restaurant or an attraction? Or would you like assistance with accommodations? Sentence6: Tuesday and I need to leave after 16:45 please. Sentence7: Yes, I'm looking for a college to visit in town. Can you give me some info on what's around? Sentence8: The train is booked for 8 people and the reference number is OPGQ4971 . Do you need any other assistance? Sentence9: I am particularly interested in colleges if you would focus on that type of attraction. I would appreciate it. Sentence10: Are there colleges in the centre of town? Sentence11: You are welcome. Please let us know if you need anything else. Have a great day! Sentence12: Yes, there are 13. I personally recommend corpus christi. Entrance costs 2 pounds. The address is king's parade, postcode is cb21rh, and phone number 01223338000. Sentence13: There are 18 colleges in town. Do you have an area preference? Sentence14: I need help booking a train from cambridge to ely. Question: Who has spoken the sentence 13? (A) User (B) System
[EX A]:
Answer: (B) System