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

Example Input: Sentence1: I prefer a gueshouse. Sentence2: I'm glad I was able to help you today! Thank you for contacting Cambridge TownInfo centre. Enjoy your trip! Goodbye! Sentence3: There are many places to stay that offer free parking. Do you prefer a guesthouse or hotel? Sentence4: No, but can you help me find a restaurant? I think it's called Meghna. Sentence5: Ahhh.. great, thanks! That's all I needed! Sentence6: Yes, they are at 154 chesterton road and can be reached by phone at 01223353888. Would you like me to book you? Sentence7: Great can you tell me the star rating of the hotel as well? Sentence8: Yes, that is a moderate priced indian restaruant in the west. Sentence9: Acorn Guesthouse has a star rating of 4. Would you prefer other options or would you like for me to book you? Sentence10: That's it! Can you give me the phone number and area, please? Sentence11: Can I please have their address and phone number? Sentence12: The acorn guest house would fit your needs would you like me to make a reservation for you Sentence13: Meghina's phone number is 01223727410. They are located in the west. Sentence14: Place to stay the night, with free parking and it doesn't need free wifi. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I'm also looking for a restaurant in the centre of town that serves chinese food. Sentence2: I need to leave bishops stortford. Do you have a train going out? Sentence3: The Ugly Duckling sounds interesting! What's their address? Sentence4: I'd like to go to Cambridge and would be leaving on Thursday after 16:30. What is available then? Sentence5: Fantastic, have a great day! Sentence6: They are 10.10 pounds each Sentence7: I have 4 choice for you. The Ugly Duckling, Tang Chinese, HK Fusion, and the Sesame Restaurant and Bar. Does one of these sound like something you would like to try? Sentence8: No thank you. That is all. Sentence9: The Ugly Duckling is located at 12 St. Johns Street City Centre. Their postcode is cb21tw. Is there anything more I can help with? Sentence10: There's a train that leaves at 17:29 and arrives by 18:07. Does that sound okay? Sentence11: I am sure I do, where would you like to go? Sentence12: Yes, that would work. What is the price of a ticket? Sentence13: There are several Chinese restaurants in the centre of town. What price rnge are you looking for? Sentence14: I prefer something expensive. Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The address for Castle galleries is Unit SU43, Grande Arcade, Saint Andrews Street. Sentence2: Yes, I would like to head to and from the attraction. Sentence3: Let us know if you need further help. Good bye. Sentence4: Alright, I have a red skoda scheduled to pick you up. The contact number is 07634294072. Can I help you with anything else? Sentence5: Hi, I am looking for a hotel called the Acorn Guest House. Could I get the address? Sentence6: And how many nights would you like to stay? Sentence7: Nope that should do it. Thanks much, goodbye! Sentence8: Will you be heading to the hotel? Sentence9: Acorn Guest House is located at 154 Chesterton Road, cb41da. It's a 4-star guesthouse in the north. Sentence10: Great. I need to make a reservation starting on Saturday. Sentence11: Great. I would like a taxi to pick me up there at 21:00. Sentence12: 6 people and 5 nights starting from saturday. Sentence13: 5 nights starting from saturday. Sentence14: And how many people will be staying? Sentence15: Your reservation for 5 people at the acorn guest house this saturday for 6 days 5 nights was successful. Your Reference number is : ME1D0S58 . Sentence16: Thanks so much. Can you tell me the address for a place called Castle Galleries? Question: Who has spoken the sentence 8? (A) User (B) System
Example Output:
Answer: (A) User