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: Booking was successful for the bridge guest house. Your Reference number is : LBEOV690 . Sentence2: Yes please. Which is the cheapest? Sentence3: Thank you. Have a nice day. Sentence4: No. I would like to make a reservation for Wednesday for 3 nights and 8 people. I will also require a reference number. Sentence5: I was unable to book your stay at any of the three hotels. Would you like to change the length of your stay or change the day? Sentence6: There are 2 hotels with a 3 star rating and free parking. Would you like to stay in the centre or south? Sentence7: Sorry, I was mistaken. There are 3 guesthouses matching your request. One each in the south, north, and west. Would you like to book one? Sentence8: Thank you. Have a nice day. Sentence9: Can you please try a 2 day stay. Sentence10: I can only tell you they are all in the moderate price range. Do you have any other preferences? Sentence11: I am looking for a hotel with a 3 star rating and free parking Sentence12: Either is fine. I'd like a guesthouse. Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: Unfortunately, I am not seeing any 4 star hotels that are moderately priced in the centre. We could try a cheaper hotel or a guesthouse? Sentence2: Sure do. Their address is fulbourn, postcode cb15dh. Phone number is 01223295264, and entrance is free. It's a museum on the Eastside. Sentence3: Nevermind. Do you have info on gallery at twelve a high street. Sentence4: Thank you very much for your help, have a nice day. Sentence5: Thank you, enjoy your stay in cambridge. Sentence6: Of course. We have so many attractions! What part of town will you be in? Sentence7: I will be visiting Cambridge soon and can't wait to see some of your local attractions. I do need your help with some information. Sentence8: I'm sorry, but there are no cheap hotels in the center of town, either. The only cheap hotel is on the west side. Sentence9: How about in the cheap price range? Sentence10: I have two options. Would you prefer a hotel or a guesthouse? Sentence11: I need a 4 star room in the centre please. Sentence12: A hotel in the moderate price range. Thank you! Question: Who has spoken the sentence 4? (A) User (B) System

Output: Answer: (A) User


Input: Consider Input: Sentence1: There are quite a few options open to you. Is there a particular type of cuisine you are interested in? Sentence2: I am looking for a restaurant in the expensive price range in the centre. Sentence3: Thank you, enjoy your stay. Sentence4: I recommend train TR3596 it will get you there by 11:24 on Saturday. Want me to book it? Sentence5: The reference number is E1KV4Y86 . May i please help you with something else. Sentence6: I am looking to travel to peterborough and arrive by 11:30 Sentence7: Yes, please. Can you book a table for 4 on Saturday at 12:45? Sentence8: I show the Gourmet Burger Kitchen available on Regent Street City Centre. Would you like to book a table? Sentence9: What is the destination? Sentence10: Booking was successful, the total fee is 52.8 GBP payable at the station. Reference number is : G82GDIBP . Can I help with anything else today? Sentence11: Yes, I'd like to find a place serving North American cuisine. Sentence12: I also need a train please. Sentence13: Yeah, please book it for the same group of people. Sentence14: No, thank you, that will be all. Question: Who has spoken the sentence 8? (A) User (B) System


Output: Answer: (A) User