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

Sentence1: The Cambridge Belfry is a hotel on the west side and is inexpensive. Their phone number is 01954714600. Sentence2: Can I get their postcode please? Sentence3: What can you tell me about Finches Bed and Breakfast? What area are they in? Sentence4: Yes, I'll also need a taxi to commute between the two places. I'll need to arrive at the restaurant by the dining time. Sentence5: Chiquito restaurant and bar is in the south area, what time would you like me to book your 4 people for? Sentence6: That's great. Everything is set. Thank you for helping me. Goodbye. Sentence7: i booked your taxi. it will be a blue lexus coming. their phone number is 07566783718. Sentence8: The table has been booked. Your reference number is PQPB99PP . Can I help you with anything else? Sentence9: You're welcome, have a great day! Sentence10: yes four people for Friday at 17:30 Sentence11: Postal is cb30nd, and if you need to call them they can be reached at 01223276653, any thing else that I can assist with? Sentence12: Okay, how about Mexican food in the south? I'll be needing a table for 4 this Friday. Sentence13: finches bed and breakfast Is in the west, it is cheap, 4 star guesthouse, free internet and parking. Do you need anything else? Sentence14: I would like an inexpensive hotel on the west side of town. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: Thank you so much. That is all I will need today. Sentence2: Great, how many tickets would you like to purchase? Sentence3: That would be perfect! Sentence4: I am looking to go from cambridge, and go on friday arriving by 14:30 Sentence5: Okay, how about the TR5901 leaving at 13:34 and arriving at 14:24 with a duration of 50 minutes? The cost is 16.50 pounds. Would that work for you? Sentence6: There are 266 trains going to Peterborough. Can you give me a departure day and time so that I can narrow down your choices? Sentence7: Your tickets are all booked, reference number R5P65TW5 Sentence8: I'd like to find a train to peterborough. Sentence9: Thank you for contacting Cambridge TownInfo centre. Have a wonderful day! Sentence10: 7 tickets please. Can I also have the reference number for the booking? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Yes, I also need a train to Birmingham New Street. Sentence2: Great. How many guests should I make a reservation for and what nights would you like to stay? Sentence3: Would it be possible to book this for one night? Sentence4: I'm sorry, I was unable to book with those constraints, would you like to try another day or a shorter stay? Sentence5: Yes please, for the same 3 people. And can I have the reference number? Sentence6: I just need some more information. Where are you departing from? What day and what time do you need to leave and arrive by? Sentence7: Certainly, there are 6 guesthouses, and one hotel. Do you have any preferences I should include? Sentence8: I was able to book one night starting Sunday for 3 guests. Your reference number is 1OOWMJEN . Would you like anything else? Sentence9: If there are not any hotels that do not include free parking then that place will do. Sentence10: I would like to depart from cambridge on monday. Sentence11: There will be 3 guests for 2 nights starting Sunday. Sentence12: We are happy to be of help. Thank you for using our service. Sentence13: No, that'll be all. Thank you so much for all of your help! Sentence14: Hi, I am looking for a hotel to stay in in east cambridge. Sentence15: I've completed your booking! The reference number for your train is X4WPOS52 . The total cost is 225.3 GBP and is payable at the station. Can I help with anything else? Sentence16: The hotel in question ideally would be in the expensive price range. It doesn't need to have free parking, though. Sentence17: I have 19 available trains. TR6628 leaves at 08:01 and arrives at 10:44. Would you like me to book that for you? Sentence18: Your best bet would be the Express by Holiday Inn Cambridge. It is an expensive 2-star hotel in the east area of town with free wifi and free parking. Question: Who has spoken the sentence 8? (A) User (B) System

Answer: (A) User