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

Sentence1: I think you'd like TR8842 train, it costs 23.60 pounds. Sentence2: Thanks, it would be helpful if you also told me what time TR8842 leaves. Anyhow, I just got paid. Can you find me a high-end eatery serving European cuisine? Sentence3: No thank you. I'll just need the address for an expensive restaurant that serves European food. Sentence4: Train TR8842 leaves london kings cross at 15:17 on friday and arrives at cambridge at 16:08. Can I provide you more information or book it for you? Sentence5: Arrival time is not important. I just need to leave after 14:15. I will need the train ID and the price, please. Sentence6: Sorry! As I said, it's at Free School Lane City Centre. Can I help you with anything else? Sentence7: Hi, could you help me find a train going to Cambridge? Sentence8: Is there a time you would like to arrive by? Sentence9: Where and when are you departing from? Sentence10: I would like to leave on Friday Sentence11: No, that's it. Thank you. Sentence12: which side of town is most appropriate for you? Sentence13: Have a lovely day, goodbye. Sentence14: I am leaving from London Kings Cross after 14:15. Sentence15: I'm sorry, but I think you gave me the phone number. I need the address, please. Sentence16: I don't have a preference really, please recommend one. Sentence17: no. i just need the address Sentence18: What day would you like to leave? Sentence19: its address is 01223368786. is that it? Sentence20: How about the eraina located at Free School Lane City Centre. Would you like reservations? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: The post code is cb23dz. Sentence2: I need to arrive at 17:45. Sentence3: I will travel Tuesday. Sentence4: Thats perfect. What is the price and travel time on this train? Sentence5: I also need a train, to cambridge, I want to arrive by 17:45. Sentence6: There's a train that leaves at 13:17, want that one? Sentence7: What day do you need the train? Sentence8: Can I help you with anything else? Sentence9: Is there a time you need to leave or arrive by? Sentence10: It is 17.90 pounds and takes 60 minutes. Would you like me to book this for you? Sentence11: No thanks, just gathering information, that is all I need. Sentence12: That is all I needed today. Sentence13: Could you please provide me with the postcode. Thank you! Sentence14: As long as it arrives in Cambridge by 17:45 and departs from Broxbourne that will work. Sentence15: Glad I could help come backk if you need anything else Sentence16: I am looking for information about the museum of archaeology and anthropology. Sentence17: I have one arriving at 7:32 will this work for you? Sentence18: That museum is located over at University of Cambridge, downing street. It's free to visit. Question: Who has spoken the sentence 11? (A) User (B) System
Answer: (B) System

Sentence1: Yes, a table for one on Wednesday at 20:00. Sentence2: Can I make the reservation for you? Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : XT4L7KCY . Sentence4: Thank you that will be all I need Sentence5: I am looking for a restaurant that serves modern European food. Sentence6: moderate price range please and thank you that will be all Sentence7: Yes they have wifi Sentence8: The Centre has many choices, 69 to be exact. Do you have any food type or price range in mind? Sentence9: The Gonville Hotel is available in that area. Sentence10: What price range would you like? Sentence11: It is an expensive hotel and the address is gonville place. Sentence12: Okay can you tell me the address and price range of the Gonville Hotel? Sentence13: You are welcome enjoy Sentence14: Do they have wifi? Sentence15: No reservation, just a taxi from the hotel to the restaurant arriving by 20:00 Sentence16: I can suggest the riverside brassiere. Sentence17: Thanks. Now I can book my taxi from the hotel to the restaurant. Sentence18: Would you like me to reserve the hotel? Sentence19: Where will you be leaving from? Sentence20: Can you help me find a restaurant in the centre? Sentence21: all set for your taxi yellow audi Contact number 07456600776. Any thing else i can do ? Sentence22: Sorry I need to book a hotel first. Do you have a 3 star with free parking in the same area? Sentence23: I will also need a taxi. Sentence24: I want the taxi to arrive to the restaurant in time for my reservation there Sentence25: What time will you be leaving and what time you will like to arrive? Sentence26: Ok sure. I need brassiere Question: Who has spoken the sentence 6? (A) User (B) System

Answer: (A) User