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

Ex Input:
Sentence1: They are all moderately priced, but Avalon has free internet and four stars. Would that suit you? Sentence2: Yes, free wifi. No free parking though. Sentence3: That sounds good. Do they have wifi? Sentence4: Your table has been booked. The reference number is 3FOO64PM . Sentence5: Thank you I am also looking for a restaurant in the same area as the hotel serving expensive chinese food. Sentence6: please contact us again in the future. goodbye. Sentence7: There is Hakka located at Milton Road Chesterton would you like me to reserve it for you? Sentence8: I have three guesthouses to choose from. Do you mind they are in the north? Sentence9: I'm looking for a guesthouse to stay in and I don't need a free parking. Sentence10: 01223315702 and cb12dp. Sentence11: Perfect thats all I needed! Sentence12: This one is in the north a and b guest house Sentence13: Are there any moderately priced 3 star guesthouses in the west available? If not in the west, what about the north? Sentence14: Yes please. I need it for 8 people on Wednesday at 19:15. Sentence15: That's fine. Could I get their postcode and phone number? Sentence16: No that is okay, can you book the cheapest one for me please? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Yes I was able to locate 4. Can I book a table for you? Sentence2: Thanks so much! Sentence3: Is there anything else that I can book for you or assist you with for your upcoming trip? Sentence4: Are you looking for a Danish restaurant? Sentence5: Yes please in the same area and price range. Sentence6: For four, Thursday, 11:45. Sentence7: Booking unsuccessful. Would you like to try another restaurant? Sentence8: Thank you have a good day. Sentence9: Yes please. In the centre of town. Sentence10: Yes please,for tonight at 9 PM if possible. Sentence11: I will make a booking for you at hk fusion, but I do need to know what day and time you prefer, and for how many people. Sentence12: I am looking for an expensive Danish place. Sentence13: Is there an expensive chinese restaurant in the centre? Sentence14: I am sorry I have no listings for that type of restaurant, is there any other type of food you would like? Sentence15: Booked at ugly duckling. Reference number: EQFGNMFY . Table will be held for 15 minutes. Sentence16: That was all I needed today thank you! Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I want to arrive by 15:45 Sentence2: Kings Lynn. I need 5 tickets and my reference number Sentence3: My arrival destination is Cambridge. Sentence4: Any more details you would like to provide? The TR7423 leaves Cambridge on Sunday at 5, heads to London Kings Corss and arrives at 5:51. Sentence5: Train TR2257 has been booked for 5 seats. Your reference number is E720WBAI . Can I assist you with anything else today? Sentence6: Okay when would you like to leave by? Sentence7: There are many trains running on Monday, what is your arrival destination? Sentence8: I would like to travel on Sunday please. Sentence9: Yes that would be great also I need the reference number after you book it. Sentence10: TR2257 will arrive at 14:58. Should I go ahead and book 5 tickets for this train? Sentence11: I'm sorry, my booking system seems to be down. Can you try again later? Sentence12: That won't be a problem. Can you please provide me with some addition details? For example, what day and time you'd like to travel? Sentence13: I could use some help finding a train for my stay with you. Sentence14: Thank you for using our service today! Sentence15: Oops. Sorry. My travel day is Monday not Sunday. What do you have for that day. Sentence16: Yea that is okay THank you Sentence17: no thanks that's all Sentence18: What is your departure site? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System