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

Example Input: Sentence1: What time would you like to leave by? Sentence2: Great, I have booked you a white Honda the Contact number is 07767407244. Anything else I can help you with. Sentence3: I would like to book a taxi to hughes hall please. Sentence4: I would like to arrive by 19:00 if possible. Sentence5: I will be departing from the river bar. Sentence6: nope thats all thanks Sentence7: Where will you be departing from? Sentence8: It was my pleasure to assist you with that. Hoping you have a great day. Goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: No specific area. Sentence2: Thank you, goodbye. Sentence3: I have found no restaurants serving Christmas food in the expensive price range. Would you like a different type of food? Sentence4: phone number and address of Cambridge Lodge Restaurant please Sentence5: is there any area you prefer! Sentence6: I want to find an expensive restaurant serving christmas food. Sentence7: Thank you for using the Cambridge restaurant system. Goodbye. Sentence8: Are there European types of restaurants? Sentence9: Cambridge Lodge Restaurant is in the west part of town, at Cambridge Lodge Hotel 139 Huntingdon Road City Centre. Their phone number is 01223 355166. Sentence10: Yes, there are four: cambridge lodge restaurant, eraina, and michaelhouse cafe serve european food, with darrys cookhouse and wine shop serving modern european food Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: There are trains every hour starting at 05:40. Travel time is 163 minutes. Is there a time you want to depart or arrive by? How many people are traveling? Sentence2: Not really. What would you recommend? Sentence3: I have a 16:40 departure and the train ID is TR5349. Sentence4: Is there any particular cuisine you have in mind? Sentence5: Okay, sure. The address is 64 Cherry Hinton Road Cherry Hinton. The post code is cb17aa, and the phone number is 01223412299. Do you need anything else? Sentence6: I need the train Id. Sentence7: What information do you want in particular? Sentence8: I sure can, which stations will you be traveling between? Sentence9: Thank you so much. Goodbye. Sentence10: Taj Tandoori is a great place for Indian food. Would you like a reservation? Sentence11: Okay great I am glad I could assist you today. Sentence12: That is all I need. Sentence13: I am looking for an expensive place to eat in the South, Sentence14: What time will it arrive? Sentence15: Have a nice day. Good bye. Sentence16: I don't need a reservation yet. May I have Taj Tandoori's address, postcode, and phone number, please? Sentence17: Yes! Can you help book train tickets? Sentence18: I'm not good at maths so please give me the total travel time too. Sentence19: It will arrive in Cambridge at 19:23. Sentence20: No problem. The travel time is 163 minutes. Is there anything else I can do for you? Sentence21: I's like to depart after 16:15. I just need information, not a booking. Sentence22: I'm going to be headed to Cambridge from Birmingham New Street on Monday. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System