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

Example Input: Sentence1: Thanks, can I also have the phone number and postcode? Sentence2: I'm sorry this happened to you, I really hope that the police are able to help. If there is anything else I can do for you don't hesitate to ask. Sentence3: Yes, the postcode is CB11JG and the phone number is 01223358966 Sentence4: I've been robbed and need the police. Sentence5: Great, thank you for your help. I don't need anything further. Sentence6: Okay, the police station is located at Parkside, Cambridge. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Alright. I booked your train leaving Cambridge at 19:34 and arriving in Peterborough at 20:24. The reference number is A8T38EJZ . Sentence2: Cityroomz is a moderately priced hotel with internet. Would that work for you? Sentence3: What day are you traveling, and to which station? Sentence4: Thanks, have a good day. Sentence5: You, too. Goodbye. Sentence6: Okay. Call us back if you need me to book anything for you. Sentence7: Yes that will work. Can I get the hotel's phone number? Sentence8: We have 30 such entries. Do you have a time you'd like to leave by? Sentence9: Sure thing, their number is 01223304050. Is there anything else I can help you with today? Sentence10: Any time is fine as long as I can book for four people. I also need the reference number, please. Sentence11: I'll be traveling on wednesday, and I will be go to peterborough. Sentence12: There are 9 different hotels that have free wifi that aren't guesthouses, do you have a price range in mind? Sentence13: No particular price range but I would like it to be in the centre. Sentence14: Thanks. I'm also looking for a hotel (not a guesthouse) with free wifi. Sentence15: No, that will be all, thank you for your help! Sentence16: I need a train departing from cambridge and arriving by 20:45. Question: Who has spoken the sentence 14? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: There are so many to choose from. Any idea what kind of attraction you would like to visit? Sentence2: It will just be a table for one. Go ahead and book it Sentence3: Yes, I would like to go to a college with free admission. Sentence4: How many will be at your table? Sentence5: sure thing it is cb23bu, anything else today? Sentence6: Yes, I'd like to find a cheap Chinese restaurant. Sentence7: The reference # is 4ZBQs5GE . Need anything else? Sentence8: There are 10 colleges in the centre with free admission. Would you like me to suggest one? Sentence9: I'm looking for an attraction in the centre. Sentence10: What is that college's postcode? I'm also hungry and want somewhere to eat. Sentence11: Great, that's all I need...thanks so much! Have a great day! Sentence12: There are four options, charlie chan is in the centre near the college that you are visiting, shall I book you? Sentence13: Yes please book it for monday at 11:15 Sentence14: Can you give me the postcode for Christ's College? Sentence15: You are welcome. Glad to be of assistance. Enjoy your stay in Cambridge. Bye. Sentence16: Christ's college have a free entrance Sentence17: I also need a taxi that will arrive by the booking time. Sentence18: Booked car type : white ford Contact number : 07018249902 Question: Who has spoken the sentence 15? (A) User (B) System
Example Output:
Answer: (B) System