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

Ex Input:
Sentence1: We have 13 trains meeting your criteria. Do you have any idea how early you want to leave? The first train leaves at 11:32 and then every hour after that Sentence2: Are there any cheap options in the centre of town? Sentence3: We can take care of that too, but let's get your restaurant squared away first - in order to provide an address I'll need to know what type of cuisine? Sentence4: Whichever one you think is best please. Sentence5: to cambridge from broxbourne. i need to leave after 11:15 please Sentence6: Where will you travel too and from? Sentence7: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence8: excellent. I will need the train booked for 5 as well. Sentence9: It has been booked. You reference number is UCICW103 . Sentence10: I recommend the Dojo Noodle Bar. They're located at 40210 Millers Yard, City Centre. Sentence11: I will be traveling on Sunday. Sentence12: Hi. Can you help me find a restaurant? Sentence13: and what day will you be traveling on? Sentence14: The train should leave broxbourne after 11:15 so the 11:32 is a good choice. There are 5 of us traveling together. Please book. Sentence15: There are a lot of options in Cambridge. Can you please be more specific? Sentence16: Yes, there are chinese, asian oriental, indian, italian, spanish, portuguese, modern europe, and mediterranean available. Sentence17: Great. Thank you so much. Sentence18: Can I have the address? I am also looking for a train that leaves on Sunday to Cambridge. Question: Who has spoken the sentence 16? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: That is all, thank you, goodbye. Sentence2: Is there anything else we can help you with? Sentence3: Goodbye. Sentence4: Ok. Thanks. Sentence5: I am looking for a restaurant in the south part of town and serving portuguese food. What is the address and phone number? Sentence6: Nandos is a portuguese restaurant in the south part of town. Their address is Cambridge Leisure Park Clifton Way and their phone number is 01223 327908 Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: ok thank you, lets book that one Sentence2: You're welcome, have a great day! Sentence3: Sure, I can help you with that. What section of town were you looking for? Sentence4: I would need seats for 5 people please. Sentence5: yes, it'll be for the same group of people. Sentence6: Same day tuesday, lets try for 16:45, get a little ahead of the dinner crowd. Sentence7: The area doesn't matter. Please recommend a good place if you could. I need a table booked for 5 people at 16:45 on Tuesday. Sentence8: For what day and time is the reservation for 5? Sentence9: Thank you. Can you also help me find a good Italian eatery? I'd like it to be moderately priced, please. Sentence10: I have you booked on TR2083 arriving in Cambridge at 10:07. It will cost 50.5 payable at the station. Reference EEBGS9FF . Sentence11: My all time favorite italian food place is Prezzo. It is located in the west. Would you like me to reserve you a table? Sentence12: Your reference number for your reservation is 7E1MPES0 and they will hold the table for 15 minutes. Is there anything else that I may assist you? Sentence13: I'm looking for a train that will depart from bishops stortford and that will arrive by 11:45. I'm looking forward to a good lunch in Cambridge! Sentence14: How many seats would you like to book on TR9178? Sentence15: There is a train everday that arrives at 10:07 Sentence16: That is all, thank you very much Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:

Answer: (B) System