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

Ex Input:
Sentence1: How many tickets please Sentence2: I want to go to Cambridge on Wednesday. Sentence3: I can give you all kinds of information as well as book a ticket. Where are you going and when? Sentence4: Have a great stay in town. Goodbye. Sentence5: Train TR9741 arrives at 07:52 and I have booked you for 2,here is your information:Booking was successful, the total fee is 8.8 GBP payable at the station . Reference number is : U44P6DQP . Sentence6: I want you to book it for 5 nights, starting wednesday. 2 people. Sentence7: Where will you leave from? Sentence8: Sure thing, what kind of information do you need? Sentence9: Nope, that's all I need today. Thanks for all your help. Goodbye! Sentence10: Okay that booking was successful. Your reference number is 2VD26230 . Anything else I can do for you? Sentence11: I am looking for information and would appreciate the help. Can you help with a train? Sentence12: Would you like to specify a departure or arrival time? Sentence13: I would need 2 tickets. Sentence14: Can you also look up the hotel Carolina Bed and breakfast? Sentence15: I will be leaving from ely. Sentence16: I need to arrive by 08:45 Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: I would actually like to book it for 8 people, not 3. Sentence2: Could you reserve the one in the centre of town for 3 nights starting Monday? There will be 3 of us. Sentence3: You're welcome. Glad to help! bye bye! Sentence4: Sure no problem. So the hotel is huntingdon marriott hotel and your reference number for the booking is 34BAQ2WK . Is there anything else I can help? Sentence5: I am looking for a hotel in the expensive price range. Sentence6: Unfortunately, I wasn't able to book you for the day and time you wanted. Would another day or time be alright? Sentence7: No, it doesn't matter. I would like a 4 star hotel with free parking though. Sentence8: That's great. I'm all set , thank you! Sentence9: There are 5 expensive hotels available. Did you have a preference as to area of the hotel? Sentence10: There are two, one in the west and one the centre of town. Sentence11: I couldn't book that one either. Would you like to change your criteria? Sentence12: Okay, could you try the other one, please? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: I'm leaving from primavera. Sentence2: Booking completed! Booked car type : yellow bmw Contact number : 07711369546 Sentence3: I need to book a taxi to leave after 07:45 to take me to Bangkok City. Sentence4: Where will your departure site be? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:

Answer: (B) System