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

Example Input: Sentence1: Let's try for saturday, but if that is not available then tuesday would be fine Sentence2: I was able to book you for Saturday. Sentence3: That will be all, thanks again. Sentence4: I would like to leave after 21:30. Sentence5: What day will you be arriving? Sentence6: I found Alexander bed and breakfast . Do you want to make a reservation? Sentence7: Yes bookit for the same group of people 4 nights. Sentence8: thanks can I get a reference number please? Sentence9: Yes, i am looking to book a room at the alexander bed and breakfast. Sentence10: You are welcome enjoy Sentence11: Would you like to leave or arrive by a certain time? Sentence12: Yes, whichever train has seats available for 7 people. Sentence13: I'm looking for a train that goes to Cambridge on Saturday Sentence14: I will be departing from broxbourne. Sentence15: We have 3 options that meet your criteria. All depart within an hour of each other starting at 21:32. Would you like me to book one of them for you? Sentence16: Your booking was successful, the total fee is 100.24 GBP payable at the station. The train departs at 21:32. Your reference# is UZFW2TAQ . Is there anything else? Sentence17: Where will you be departing from? Sentence18: Your reference number is XVE54KKH . Is there anything else I can do for you? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: You're welcome, have a great day. Sentence2: What city are you departing from? Sentence3: Thanks. Can you also look up information on Lovell Lodge hotel? Sentence4: Thank you for the info, that will be all. Sentence5: Can you give me the day you are traveling? Sentence6: I'm leaving on Saturday. May I please have the travel time? Sentence7: i'm leaving from cambridge Sentence8: Can you help me find a train arriving by 12:45 going to birmingham new street? Sentence9: Travel times for all trains on that route are 163 minutes. The TR2576 would get you to Birmingham New Street at 11:44. Sentence10: The Lovell Lodge hotel is located in the north that is 2 stars. It has moderate pricing, free internet and parking. Their phone number is 01223425478. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The nearest one to the hotel. Sentence2: Actually, I don't need one near a hotel. I just need the phone number and address of an expensive one. Sentence3: Yes the Eraina is expensive and their address is Free School Lane City Centre and their telephone is 01223368786 Sentence4: Thank you very much. That was all I will be needing today. Sentence5: What hotel are you staying at? Sentence6: I have booked you a blue skoda. The contact number is 07822607219 Sentence7: Queen's College is on the west side of town, on Silver Street. Their postcode is cb39et. Sentence8: Can you verify the type of place this is and the address please? Sentence9: It is a college and the address is silver street. Anything else I can help you with? Sentence10: Alright, I want you to book me a taxi from Queen's College to the Eraina. I'll be leaving the college at 12:00. Sentence11: Ok thank you for using this service and have a nice day. Sentence12: I'm looking for restaurant in the centre area that serves European food please. Sentence13: Where can I find the Queen's College? Sentence14: I have several listed from moderate to expensive. Do you have a preference? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output:
Answer: (B) System