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: Enjoy your travels! Let us know if we can be of any further assistance. Sentence2: TR8143 departs at 14:11 and arrives in Cambridge by 14:58, does this suit your needs? Sentence3: I need a train leaving from kings lynn. Sentence4: Yes, I'd like to travel on Wednesday, and I'd like to arrive in Cambridge no later than 15:30. Sentence5: There are no nightclubs in the west. Would you like to try another area? Sentence6: There are 133 trains leaving Kings Lynn, do you have a particular day you are traveling? Sentence7: They have free entrance. Their postcode is cb30ds. Sentence8: Could you look up a college instead then? Sentence9: I'm glad I could help. Sentence10: Churchill college is located in the west part of town. Sentence11: Yes it does. Can you verify the total travel time and price? Sentence12: Thank you goodbye. Sentence13: Thanks a lot, that's all. Sentence14: Sure - the travel time is 47 minutes, and the fee is 9.80GBP per ticket. Sentence15: I also need a nightclub in the west. Sentence16: Could you get me the postcode and entrance fee for there? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: That is all I need, thank you! Sentence2: I have you in a red Toyota, contact is 07737828007. Sentence3: Thank you, have a great day. Sentence4: Ok I have a red toyota and the contact number is 07737828007. Sentence5: I am coming from rice boat and need to get to limehouse by 01:45 Sentence6: I'd be happy to help! Where are you coming from? Sentence7: Have a safe trip! Sentence8: I need a taxi to come at 1:45 to rice boat. Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System