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

Ex Input:
Sentence1: Your reservation was successful and your reference number is UO8AN5FO . Is there anything else that I can help you with today? Sentence2: I am looking for the Alpha-Milton Guest house and would like to book it for 5 people for 2 nights starting Friday. Can you send me the reference please? Sentence3: That's all, thank you so much! Sentence4: Thank you for calling, enjoy! Goodbye. Sentence5: Sure, what is the name of the hotel? Sentence6: Hello. Can you help me in locating a certain hotel? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Help me reserve a taxi to take me to kambar Sentence2: Sure! when would you like to arrive? Sentence3: Sure! What is your departure site? Sentence4: Great. Have a wonderful day. Sentence5: Okay I booked your taxi successfully Sentence6: It doesn't matter. I just want to leave there after 10:45 Sentence7: I need to leave from lovell lodge Sentence8: Great, what are the details, please? Sentence9: A white honda will be picking you up, the contact number is 07580557287. Is there anything else I can help you with? Sentence10: That's all I need for now. Thank you. Goodbye. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Great, I have booked the ticket, your reference number is U3R44BJS . Is there anything else I can do for you? Sentence2: I am also looking for a train departing from Cambridge leaving on Wednesday. Sentence3: There is a Museum of Classical Archaeology. Their phone number is 01223335153. Is there anything else I can help with? Sentence4: I don't have archaeology however I have museums and architecture. Are you interested in one of those? Sentence5: Yes, I think I've heard of a museum of classical archaeology. Do you have their phone number? Sentence6: I am going to stevenage and I want to leave after 11:30. Sentence7: Thank you for contacting the help desk. Have a wonderful day. Sentence8: There are over 200 trains leaving on Wednesday. What is your destination? And do you have a preferred departure or arrival time? Sentence9: That'll be everything. Thank you! Sentence10: There is a train that leaves Cambridge at 15:21 and arrives in Stevenage at 16:10. Would that work for you? Sentence11: I am looking for something to do. Are there any attractions related to archaeology? Sentence12: Yes that's all the info that I have, thank you. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System