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

Ex Input:
Sentence1: can you tell me what area that's in? Sentence2: The Avalon is a guesthouse at 62 gilbert road with free wifi but no parking. Would you like to book them or keep looking? Sentence3: A and B Guesthouse is in the east Sentence4: I have found 14 different guesthouses for you. What area are you interested in? and will you be needing parking? Sentence5: I'd like the accommodations to be a guesthouse, if possible. Sentence6: There are 3 hotels in the moderate price range with free internet. Do you want free parking and what area do you want to stay in? Sentence7: I need a guesthouse in the moderate price range with free wifi. Please let me know whether they have free parking. Sentence8: i'm looking for a moderately priced hotel that includes free wifi. Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Sure, that post code is cb39al. Can I further assist you? Sentence2: I'm interested in visiting colleges while in town, can you please recommend some? Sentence3: I can recommend clare hall and christ's college. You need phone numbers for either one? Sentence4: Okay the TR5009 leaves at 18:40. Sentence5: Yes I also need a train to stansted airport on sunday Sentence6: That sounds great, do I call to book a seat or can you help me? Sentence7: No, thanks. That's all I needed. Sentence8: I'm glad I was able to help you. Thanks for using our service have a nice day. Sentence9: Sure. Where will you be departing from, and what time? Sentence10: Please book for 6 people. Sentence11: I am leaving from Cambridge. I would like to leave sometime after 18:00. Sentence12: I would like the post code for clare hall please. Sentence13: I would be more than happy to help you book! Tickets are 8.08 pounds. How many tickets would you like me to book for your trip? Sentence14: Booking was successful, the fee is 48.48 GBP payable at the station . Reference number is 4ESBHTB0 . Is there anything else I can help you with? Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I am looking for a hotel by the name of The Lensfield Hotel. Sentence2: Good news, it is free to enter! Is there anything else I can assist you with today? Sentence3: I'd like to suggest the broughton house gallery. Do you need any information on it? Sentence4: i also want to book a taxi. i want to leave the hotel by 18:30. get contact number and car type Sentence5: What type of hotel is this and could I get the address? Sentence6: I have a listing for that hotel. It is on the south side and has three stars. Can I book you a room? Sentence7: No that is everything I need today. Thank you for your help. Sentence8: Booked it. It's a yellow honda, contact 07649871562. Anything else you need? Sentence9: Yes, can you tell me the entrance fee? Sentence10: It's a hotel and the address is 53-57 lensfield road. Is there anything else I can help you with? Sentence11: I'm also looking for a museum located in centre. Sentence12: Thank you for contacting Cambridge TownInfo centre. Goodbye! Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User