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

Input: Consider Input: Sentence1: Let's try for saturday, but if that is not available then tuesday would be fine Sentence2: I was able to book you for Saturday. Sentence3: That will be all, thanks again. Sentence4: I would like to leave after 21:30. Sentence5: What day will you be arriving? Sentence6: I found Alexander bed and breakfast . Do you want to make a reservation? Sentence7: Yes bookit for the same group of people 4 nights. Sentence8: thanks can I get a reference number please? Sentence9: Yes, i am looking to book a room at the alexander bed and breakfast. Sentence10: You are welcome enjoy Sentence11: Would you like to leave or arrive by a certain time? Sentence12: Yes, whichever train has seats available for 7 people. Sentence13: I'm looking for a train that goes to Cambridge on Saturday Sentence14: I will be departing from broxbourne. Sentence15: We have 3 options that meet your criteria. All depart within an hour of each other starting at 21:32. Would you like me to book one of them for you? Sentence16: Your booking was successful, the total fee is 100.24 GBP payable at the station. The train departs at 21:32. Your reference# is UZFW2TAQ . Is there anything else? Sentence17: Where will you be departing from? Sentence18: Your reference number is XVE54KKH . Is there anything else I can do for you? Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: The address is 41 Warkworth Street. Can I help you with anything else today? Sentence2: Yes, I'm looking for a guesthouse with a star rating of 1. It should be in the city centre please. Sentence3: Enjoy your trip. Sentence4: Hi! I'm looking for someplace to go in the centre. Sentence5: No that was all I needed. Thank you, goodbye. Sentence6: I don't have any guesthouses that meet that criteria. Would you like me to try something else? Sentence7: Do you have any guesthouses with a star rating of zero? Sentence8: You are booked for a yellow audi. Your contact number is 07526986404. May I help you with anything else? Sentence9: What is your departure site? Sentence10: No not right now. What is their address? Sentence11: I'm sorry, we need a taxi departing from Saint Mary's Church by 3:15 going to the guesthouse. Sentence12: Yes, I do have one. The El Shaddai is in the centre and is cheap. It is 0 star rated and offers free parking and wifi. Do you need a room? Sentence13: It does not really matter can you suggest one? Sentence14: how about little saint mary's church? Sentence15: Okay, there's plenty to do in the city's centre. What kind of attraction are you interested in? Sentence16: I also need a taxi to get to little saint mary's church by 3:15. Sentence17: It is an architecture attraction it's located on little saint mary's lane postcode cb21qy. Is there anything else I can help you with? Sentence18: Sounds perfect. Is it architectural? Also, can I have the address with postcode? Question: Who has spoken the sentence 16? (A) User (B) System

Output: Answer: (A) User


Input: Consider Input: Sentence1: Your reservation is all set! Your reference number is WFOQFQ2P . Is there anything else I can help you with? Sentence2: There are two options. Both are expensive. Do you have a preference for area? Sentence3: I'm wondering if you have information about a particular restaurant called the curry queen? Sentence4: My preferred type is a hotel, and I want it to have parking and internet as well as a 3 star rating. Sentence5: I was able to book the gonville your reservation number is LANIULI7, anything else I can help you with today? Sentence6: Awesome, you've been a great help. Thank you. Sentence7: Do you have a price range or area you would like to stay? Sentence8: I'm happy to help, and I hope you enjoy your time in Cambridge! Sentence9: Need to book a hotel as well. Sentence10: No I have no preference. I would like to book it same day for 7 people and 4 nights. I would need the reference number once it is complete. Sentence11: The curry queen is an expensive restaurant located in centre. Would you like me to book a table for you? Sentence12: Yes, a table for 7 at 12:45 on Sunday. Sentence13: I'm sorry, I am unable to book it right now. Sentence14: Are you sure? Can you try both of them? I really need 4 nights, starting sunday for 7 people. Question: Who has spoken the sentence 8? (A) User (B) System


Output: Answer: (A) User