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

Sentence1: You have been very helpful. Thank you. goodbye. Sentence2: Yes I certainly can! Your reservation was successful and your booking reference is 5F3KBH78 . Sentence3: Can you make reservations for 6 at 14:30 on Thursday? Sentence4: The J restaurant serves cheap asian oriental food in the centre of town. Their phone number is 01223307581. The address is 86 Regent Street City Centre. Sentence5: Can you tell me about the J Restaurant? Sentence6: Glad to help. Have a great day and enjoy your meal. Good bye. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Thank you for using our system today! Sentence2: I am coming to cambridge and heard about a bed and breakfast called finches. Sentence3: Yes, I would like to arrive before 5:00 PM. Sentence4: It is a lovely guesthouse on the west end boasting cheap prices and a 4 star rating! Would you like their address or phone number perhaps? Sentence5: I actually would like to book the hotel for 7 people starting on Tuesday for 3 nights. Sentence6: I'll be departing from cambridge and going to norwich. Sentence7: I apologize, I actually need to leave after 16:30 Sentence8: No problem, but I'm afraid there are no trains leaving after 16:30 and arriving by 17:00. Might I suggest TR7047, which leaves Cambridge at 16:36 and arrives in Norwich by 17:55? Sentence9: Is there a time you would like to arrive before? Sentence10: Can you also help me find a train on Fridya? Sentence11: Train TR7747 leaves at 15:36 and arrives in Norwich at 16:55. Would you like me to book you tickets? Sentence12: Thank you, no that will be all. Sentence13: OK, the booking for successful. The total is 17.6 GBP and the reference number is MIMOPEN1 . Is there anything else I can do for you? Sentence14: Yes, that sounds great. Please book that for me. Sentence15: I was able to book your party of 7 at Finches bed and breakfast for 3 nights. Your reference number is 4R76GWVJ . Can I help you with anything more today? Sentence16: Of course. There are many available Friday. Where will you be traveling to and from? Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

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

Answer: (B) System