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

[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: Are there any with 2 stars that offer free parking? Sentence2: I want to leave by 01:30. Sentence3: We have serveal entertainment attractions. Would you like to try the funky fun house? Sentence4: I will need a taxi to take me from the Funky Fun house to my hotel. Sentence5: I was able to book a taxi for you from Funky Fun House to Ashley Hotel. It is a white BMW and the contact number is 07616230310. Sentence6: I need it to be moderately priced with a 2 star rating. Are either one of them fit this description? Sentence7: Let's go with Ashley. Book that for 8 people for 3 nights starting from saturday. Sentence8: I'm sorry, there has been a mix up. There are two 2 star hotels available, the Ashley and the Lovell Lodge. They are both hotels and have internet and free parking. Sentence9: Yes I am looking for a hotel on the North side of town. I am not needing parking. Sentence10: The number there is 01223304705 and it's on 8 Mercer's Row. Anything else? Sentence11: I'm looking to go someplace in town. Maybe for entertainment. Do you have any recommendations? Sentence12: I would like one without the internet. Sentence13: Yes, there are two guesthouses available with free parking, one with internet and one without. Do you have a preference? Sentence14: I would be happy to help you get a taxi, what time would you like to leave funky fun house? Sentence15: What's the entrance fee? Sentence16: That sounds funky. Sure. Sentence17: Both hotels are moderately priced, but there are no 2 star ratings. Do you want to try a different rating? Sentence18: There are two guesthouses meeting your requirements. Would you prefer the 3 or 4 star one? Sentence19: Ok, I have booked your reservation at the Ashley hotel for 8 people 3 nights starting Saturday, Your confirmation number is P94ETSL1 . Sentence20: It was my pleasure to assist you. Call us again anytime. Have a good day. Sentence21: okay, that should be all! thank you so much for your assistance! Sentence22: I have no information in my system about their entrance fee. You are welcome to call them and see if they can provide you with that detail. Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I ahve two places, Chines and Portuguese, which would you prefer? Sentence2: Hi, I'm looking for a cheap restaurant in the south. What do you have? Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : VMFXYH18 . Sentence4: Any other hotels? Sentence5: i am also looking for a hotel that includes free wifi. Sentence6: I would like to book a room for 5 nights for 5 people starting the same day. Sentence7: I'm sorry I was unable to book that. Would you like to try another venue? Sentence8: I would like to book for the lensfield hotel for 5 people from the same day but for 3 nights only then. Sentence9: Yes. Can you book me a take for 5 at 18:00 on monday? Sentence10: I only see the lensfield hotel, maybe we can try with other dates? Sentence11: That would be The Lucky Star located at Cambridge Leisure Park, Clifton Way, Cherry Hinton. Can I book a table for you? Sentence12: That's all I need. Thank you for your help! Sentence13: I definitely want a hotel, not a guest house. It should also be in the same area as the The Lucky Star restaurant. Sentence14: Booking for 3 nights was a success! Your reference number is ZE9TPUSJ . Is there anything else I can help you with today? Sentence15: There are many hotels and guest houses. Do you preder a certain location and price range? Sentence16: It was a pleasure to help. Thanks for using our service. Have a great night. Goodbye. Sentence17: The Lensfield Hotel is in the south and falls in the expensive price range. They're a 3 star establishment with free wifi and parking. Care to book a room? Sentence18: Chinese would be great. Sentence19: Can we try 17:00? Sentence20: Unfortunately, I was not able to book it for monday. Did you have another day in mind? Question: Who has spoken the sentence 18? (A) User (B) System
[EX A]:
Answer: (A) User