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

Ex Input:
Sentence1: Your table is booked (ref# SCHAG4OI). What time do you need that taxi? Sentence2: The phone number is 01223240089, and the post code is cb17sr. Is there anything else I can assist you with? Sentence3: Thanks. That is all for now. Sentence4: Aylesbury odge guesthouse,I will book it for you,is there anything else I can do for you ? Sentence5: Are any a guesthouse? Sentence6: Okay. Please call us if we can help you further. We hope you enjoy your stay. Sentence7: the good luck chinese food takeaway is great. Shall i book it ? Sentence8: No I just need you to recommend one for me. Sentence9: I don't need you to book it, I just need the phone number and post code please. Sentence10: Hello, I am looking for a place to stay that has free parking in the South area. Can you help me with that please? Sentence11: What time would you like to dine, and how many will be in your party? Sentence12: Thanks, also looking for a restaurant in the same part of town in the expensive range. Can you recommend one? Sentence13: I'd like it to arrive in time to get us there before 12:15. Sentence14: Yes I have 3 guesthouses matching your criteria. Would you like to book one of them? Sentence15: Your black ford taxi has been booked and your contact number is 07103139053. Sentence16: I have four options ranging in price from cheap to expensive ranging in from 3 to 4 stars. Sentence17: There will be 6 of us. We'd like 12:15 on Saturday please. Sentence18: Please book the restaurant and I also need a taxi. Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: maybe, give me the address of one please Sentence2: There are several college's in the centre. How about Saint Catharine's College? It is on King's Parade and has free admission. Sentence3: I have train TR3343 arriving at london kings cross tuesday at 7:00. Shall I book that for you? Sentence4: Hi, I'm trying to find a place to go in the centre. A college would be fun to visit! Sentence5: Where will you be departing from, and what day would you like to travel? Sentence6: Yes, I need 4 tickets please. Please send me the reference number. Sentence7: Great! I would be happy to help you find one. Are you looking for one with free admission? Sentence8: Have a nice day and thank you for contacting us. Sentence9: Your tickets have been reserved, and just to clarify, that train departs at 07:00, and arrives in London, Kings Cross at 07:51. Wouldn't want you to miss the train! Ref#: AQDCG6N8 Sentence10: I'll be departing from Cambridge, and would like to leave on Tuesday. Sentence11: Thank you. I also need a train to London Kings cross, arriving by 9 Sentence12: OK thank you that is all I needed today. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Royal Standard's phone number is 01223247877. They are located at 290 Mill Road City Centre. Sentence2: What is the food type and price range? Sentence3: No thank you. I'm also looking for a 4 star guesthouse. Sentence4: Ok. I will take it. Sentence5: Great! Would you like me to book a room for you? Sentence6: I don't have a location preference but can you give me the phone number, postal code and price range? Sentence7: No thanks. Is there another with free wifi? Sentence8: Of course. I would recommend the allenbell. It is a cheaper hotel. It's postcode is cb13js. The number is 01223210353. Sentence9: I'm not sure yet. I'll take a place with free wifi. Sentence10: the alexander bed and breakfast has free wifi. Sentence11: Alright, thanks for the information. That was all I needed for today. Sentence12: They serve gastropub cuisine and are in the expensive range. Can I book that for you? Sentence13: I am showing 5 types of guesthouses. Four of them have free wifi and parking. How long were you planning on staying? Sentence14: You're very welcome, have a lovely day. Sentence15: Is there a particular area in which you'd like to stay? Sentence16: Hello, I'm planning a trip to Cambridge and looking to make a reservation at a restaurant called the "Royal Standard". Can you get me the information for that restaurant please? Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:
Answer: (A) User