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 book for 4 people and 5 nights from sunday Sentence2: I hope you have a great stay. Goodbye. Sentence3: I would prefer a college in town centre. I'll need the phone and address also. Sentence4: I am also looking for a place to stay in the centre. Sentence5: No that will be it thank you for your help. Sentence6: Booking was successful. Reference number is : 7RA903FR . Can I help with anything else today? Sentence7: Ok, there are 13 to choose from. Some have entrance fees. Sentence8: I'm looking for an attraction in the category of college in the center of town Sentence9: I have the cityroomz hotel in the center. Would you like me to make a booking for you? Sentence10: Moderate range please. Sentence11: What price range you would like? Sentence12: Sure thing, Downing college is located at regent street and phone is 01223334860 anything else I can assist with? Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Thank you. I am also looking for a particular restaurant, it is called Charlie Chan. Can you provide me its address? Sentence2: I want able to book your room at the Gonville Hotel for you for the two nights. Your reference number for this is KYXT8TUS . Sentence3: I would like to book for four people for three nights beginning on Tuesday. Sentence4: No, thank you. That's all I needed today. Sentence5: Does the Gonville Hotel have guesthouse accommodations? Sentence6: Yes please book it for four people in 3 nights starting on Tuesday Sentence7: Before I book this hotel I just want to inform you that I have confirmed that it is not a guesthouse but a hotel. Would you still like me to book? Sentence8: No how about two nights? Sentence9: I believe so, yes. Sentence10: Unfortunately it can not be booked for 3 days. Did you want to get information about a different hotel instead? Sentence11: I am looking for a 3 star hotel with free parking in Cambridge. Sentence12: Absolutely. On what day, for how many people and how long is your stay? Sentence13: Certainly! The address for the Charlie Chan is Regent Street City Centre. Would you like me to book a reservation? Sentence14: Thanks for contacting Cambridge TownInfo centre. Let us know if you need anything else and have a great day! Sentence15: I found a handful of locations that might suit your interests. Would you care to check out the Gonville Hotel? It has everything you are looking for in accommodations. Sentence16: Can you book this hotel? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Would you prefer a guest house or hotel? Sentence2: No problem, how many nights will you be staying? Sentence3: Perfect. I am also looking for a place to stay with free parking Sentence4: Train TR0552 arrives by 10:10 the ticket price is 12.80 pounds and the travel time is 49 minutes. Sentence5: Not really. I need to know how much a ticket costs and how long it travels. Sentence6: Well, I am planning a trip and need some help with a train. Sentence7: I'm not sure of that yet. It does need to be in the north. Sentence8: I weill departing on thursday from cambridge and need to arrive by 10:30 in stevenage. Sentence9: I have three, leaving between 5:21 and 9:21. Do you have a preference? Sentence10: Of course, do you know your departure location and time? Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System