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

Example Input: Sentence1: Hi, I am looking for a place to swim at in cambridge. Sentence2: The Yippee Noodle Bar is moderately priced. Would you like me to book you a table? Sentence3: That is all I need. Thank you. Sentence4: Thanks, also in the centre of Cambridge, could you find me an asian oriental place to dine? Sentence5: There are 4 options for asian oriental which range from cheap to expensive. Do you have a preference? Sentence6: May I have their phone numbers and the entrance fee for the pools. Sentence7: Unfortunately it is not available at that time or party size. Sentence8: I prefer moderate cost Sentence9: There are four, including parkside pools located in the centre. Sentence10: The number for parkside pools is 01223446100. You will need to call them to see if there is an entrance fee. Sentence11: You now have a 16:45 reservation for 7 at Yippee Noodle Bar. Your reference number is BOZ3MSRO . Sentence12: Let's try 16:45 then. Sentence13: You are very welcome. Goodbye. Sentence14: Yes I would like to book a table for 7 on Monday at 17:45 Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: The TR3370 will take you to norwich. Do you need a ticket? Sentence2: Well I have many things to do such as architecture visits or museums or theaters. Anything sound intriguing to you? Sentence3: There are 13 to choose from. Might I suggest the Pembroke College. They have free entrance and are located on Trumpington Street. Sentence4: The number is 01223338100. Sentence5: cool, thanks dude Sentence6: The post code is cb21rf. Can I help with anything else today? Sentence7: I need a train to norwich on Sunday. Sentence8: Yes I would like to go to a college. Sentence9: Thank you! That will be all for today! Sentence10: Do you want tickets? Sentence11: yes if it leave after 19:30. thanks Sentence12: No, I don't need to book now. On the other hand, I'm looking for something to do in the centre of city. Sentence13: I am sorry that os not leaving at the correct time but I have train TR9083 leaving at 19:55. Sentence14: Can I have the postcode? Sentence15: You're welcome. Please reach out to us again, if we can be of further assistance. Good-bye. Sentence16: Yes, can I also get the phone number for Pembroke College? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The grafton hotel restaurant sounds perfect for you. Would you like me to make a booking? Sentence2: Alright, I was successful in booking the Allenbell for Friday for 7 people at one night. Your reference code is 7D76ELJF . Is there anything else I can help you with? Sentence3: Great, let's try booking a room there. Sentence4: I'd actually like to find a guesthouse in the east instead. I'd still like it to have free wifi. Sentence5: Can you also find me an expensive British restaurant in the same area as the hotel? Sentence6: Thank you for using our system! Sentence7: What time on Friday would you like to reserve your table? Also, will it be the 7 people? Sentence8: Actually, no need to book. I just need the postcode, phone number and address for the Grafton Hotel Restaurant. Thanks. Sentence9: Yes please. Could you provide me with their postcode, phone number, and address as well? Sentence10: I would like to find a hotel in the east. Can you help me? Sentence11: Your booking is completed. Your car type is a blue bmw and contact number is 07515734744. May I help you with anything else? Sentence12: Sure, Express by holiday inn cambridge is located in the east. Free internet & parking 2 stars. Phone number is 01223866800 Sentence13: The price does not matter. I would like it to be booked for 7 people for 2 nights starting from Friday. Sentence14: No, I think that covers everything. Thanks so much for your help! Sentence15: I'd like to book a taxi from the hotel at 18:30 to the restaurant. Sentence16: It is located at Grafton Hotel 619 Newmarket Road Fen Ditton, postcode cb58pa. Their phone number is 01223241387. Can I assist you with anything else? Sentence17: I have about 6 different ones. Do you have a preference on price range? I have cheaper options and moderately priced ones. Sentence18: The booking was unsuccessful do you have another choice? Sentence19: Maybe just a one night stay then, try that. Sentence20: I can book you into the allenbell. It is a cheap price range with free wifi and parking. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System