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

Sentence1: Price range doesn't really matter, but I do want a 4-star place with free parking and internet. Sentence2: I have 19 hotels that match that criteria. please be more specific about the area of town where you'd like to stay Sentence3: Do you prefer a formal hotel, or a guesthouse? Sentence4: OK, what price point do you want me to look for? Sentence5: Booking was successful at the alexander bed and breakfast. Reference number is : MDB2AV4K Sentence6: i need a place to stay Sentence7: The area doesn't matter. Please book for 6 people on Saturday with 4 nights stay. Sentence8: Can you give me a suggestion for a hotel and make that reservation please? Thanks. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: I'll take whichever one you recommend. I just need the phone number, postcode & address please. Sentence2: TR7786 will leave at 17:00, would that work for you? Sentence3: The travel time is 51 minutes. Can I help you with anything else? Sentence4: What time would you like to depart. I have anything from 5:00 to 23:00 Sentence5: Hello, can you help me find a train going to London Kings Cross? Sentence6: You're very welcome! I hope that you enjoy your time here! Thank you for contacting the Cambridge TownInfo centre. Sentence7: There are 3 restaurants that match what you're looking for, would you like me to book one for you? Sentence8: I would recommend the Ghandi. They are located at 72 Regent Street City Centre and can be reached at 01223353942, can I assist with anything else? Sentence9: I think that's everything I need. Thank you very much. Sentence10: Can I get the travel time for that as well? Sentence11: On Monday, from Cambridge. Sentence12: Yes, I apologize but can you give me the arrival time for train TR7786? Sentence13: Yes, please. Is there a restaurant with Indian food? Sentence14: Sure I can. The arrival time for that train is 17:51. Is there anything else I can do for you? Sentence15: I'd like to leave after 15:45, please. Sentence16: I want a cheap swedish restaurant in the centre, please. Sentence17: Sure! What day are you planning on leaving? Sentence18: I wasn't able to find a cheap swedish restaurant in the centre of time. Would you like me to try a different type of food? Question: Who has spoken the sentence 17? (A) User (B) System
Answer: (B) System

Sentence1: Could you recommend one for me and help me make a booking for sunday? Sentence2: Can you help me find an expensive restaurant in the center of town? Sentence3: I also need places to go that are in the same area as the restaurant and should be in the type of architecture. Sentence4: I have 4 people in my party. Can I book a table for 17:00 on Sunday? Sentence5: There are many options. Do you have any preferences on type of food? Sentence6: That's great. I think we'll try that out. Thanks for the info. Goodbye. Sentence7: No, I would just like to know what the fee is, if any? Sentence8: The old schools has a free entrance fee. Sentence9: No problem. Thanks for using our service today. Sentence10: How about Midsummer House Restaurant, it serves British food in centre. How many people are in your party? Sentence11: I booked that, and your reservation number is RBYPR70C . Do you need any more information about the restaurant? Sentence12: Does a entrance fee make any difference? Question: Who has spoken the sentence 10? (A) User (B) System

Answer: (A) User