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

Ex Input:
Sentence1: I'm looking for a train to depart Cambridge leaving on Wednesday, can you help me? Sentence2: Anatolia sounds great. Can you give me their address, postcode, and phone? Sentence3: There are 38 trains leaving from cambridge to peterborough. What time you would like to leave? Sentence4: I would like to leave after 14:00 and make a booking. Sentence5: Yes. Either Anatolia or Efes Restaurant would be a good choice. Would you like me to book you a table at one of them? Sentence6: There are over 200 trains departing Cambridge on Wednesday. What will be your destination? Sentence7: Can you recommend a good Turkish restaurant, moderately priced, in the centre of town? Sentence8: I would like to book for 5 people. Sentence9: Anatolia's address is 30 Bridge street City Centre, the postcode is cb21uj, and the phone number is 01223362372. Is there anything else I can do to help you? Sentence10: Your tickets have been reserved. The total will be 82.5 GBP, payable at the station, and your reference number is FSS5PPSG . Is there anything else I can help you with? Sentence11: I can book you on the TR 3587 leaving at 14:06 and arriving by 14:56. Would that be good? Sentence12: Yes,and the reference number as well, please. Sentence13: You are welcome. Have a great day! Goodbye! Sentence14: I will be glad to book this for you and get a reference number. Do you only need one ticket for yourself? Sentence15: I will be leaving from Cambridge. I need to go to Peterborough. Sentence16: No, that will be all thank you. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: I have a train leaving at 18:11. Will that do? Sentence2: You're welcome. Have a nice day. Sentence3: You train has been booked. Total fee is 19.6 GBP which is payable at the station. Your reference number is 5PVB9XYJ . Sentence4: Arrival time does not matter, just leave after 17:30 Sentence5: Milton Country Park is in the north and has free admission. Sentence6: Is there a time you would liek to arrive by? Sentence7: Hello, I'm looking for a place to go in the north. Could you suggest some places? Sentence8: That would work. Can you book that please? Sentence9: Perfect! That is all I needed. Thank you for the help. Goodbye! Sentence10: I need to book for two people and I need the reference number. Sentence11: Can I get the phone number please? Sentence12: Absolutely. Their phone number is 01223420060. Is there anything else I can assist you with? Sentence13: I'm leaving Kings Lynn on Wednesday. Sentence14: Yea I also need a train that goes to cambridge and should leave after 17:30. Sentence15: How many people would you like to book? Sentence16: What day will you be traveling, and where would you like to depart from? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: What day did you want to check in? Sentence2: Yes. There will be six of us staying for two nights. Sentence3: There are many guesthouses that meet your criteria. Do you have a pricerange in mind? Sentence4: Thank you as well, let us know if you need help with anything else. Sentence5: I am looking for a place to stay. The hotel should be in the type of guesthouse and doesn't need to include internet Sentence6: I was able to book the Bridge Guest House for 6 people starting Tuesday for 2 nights. Is there anything else I can help you with? Sentence7: Yes the bridge guest house has free wifi. Can I book it for you? Sentence8: I have located 15 guesthouse types in the moderate price range. Do you have a preference for a particular area of town? Sentence9: I don't care about that. Sentence10: We have two in the south, a 4 star and a 3 star. Do you have a preference? Sentence11: I'm looking for something that would be in the middle price point. Sentence12: Does it have free wifi? Sentence13: We are actually checking in starting on Tuesday. Sentence14: Nope, that's all I need for today. Thank you! Sentence15: Maybe the south? Sentence16: Of course. Reference number COIMDB7B . Can I help with anything else today? Sentence17: How about the bridge guest house? Sentence18: Yes, can i have a reference number please? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:

Answer: (A) User