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

Sentence1: Could you look again for places that serve North American food in the West. Sentence2: I have 4 trains that meet your needs. Would you like to book tickets? Sentence3: Great! I also need to have some north american food in the west part of town. Sentence4: I am looking for information in Cambridge. Sentence5: Booking was successful, the total fee is 8.8 GBP payable at the station . Reference number is : 8BUQLIK8 . Sentence6: Great that was all I needed today, thank you Sentence7: How about an intalian restaurnat in the west area? Sentence8: You are booked the reference number is 3ICEL34F, can I help with anything else? Sentence9: I have two. One is moderately priced, and one is cheap. Do you have a preference? Sentence10: I'm sorry, we don't have any north american restaurants in the west area. Would you like to try a different type of food? Sentence11: What type of information are you looking for? I can helpp with dining, hotels and entertainment. Sentence12: You're very welcome! Have a great day. Sentence13: The moderately priced one will be fine. I'll need it booked for the same day, same people, and at 10:15. Sentence14: book for 2 people and get me the reference number Sentence15: The only north american restaurant in the city is in the centre. Would you like more information about that? Sentence16: I need a train on friday going to ely from cambridge arrival by 13:00 Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System

Sentence1: Help me find a moderate priced british food place please. Sentence2: Your reference number is T790DS3O and the total fee is 35.2 GBP, which is payable at the station. Sentence3: We will have to start over now. Sentence4: Not at this time. Could I just get the phone number? Sentence5: Yes please book it for 8 people Sentence6: Yes, restaurant one seven is located in the centre. Sentence7: Perfect, could you just tell me their phone number? Sentence8: you are welcome any time Sentence9: I also need a train from Ely to Cambridge on Tuesday to arrive by 12:30. Sentence10: I will work on booking this and be right back with you. Sentence11: No, that should be all. thank you very much. Sentence12: Is that restaurant in the Centre? Sentence13: TR3412 leaves at 11:35 and arrives at 11:52. Will this one work for you? Sentence14: Yes, sorry. Tuesday, leaving Ely and getting to Cambridge by 11:30. Sentence15: Okay, well I suppose this is goodbye then. Sentence16: The phone number is 01223337766 Sentence17: Actually, I need to change my reservation. I need the train to arrive by 11:30 instead. Sentence18: Thank you for using the Cambridge TownInfo centre. Goodbye Sentence19: I need it for 8, as I said. Do you have the reference number? Sentence20: Your updated train is now TR4669. Your new reference number is 2T4NNGG9 . The total fee remains the same. The train departs at 09:35 and arrives at 09:52. Anything else? Sentence21: Their phone number is 01223337766. Do you need assistance with anything else? Sentence22: restaurant one seven is a nice place. Do you want to book? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User

Sentence1: There will be 7 people staying for 2 nights beginning on Thursday. Sentence2: Unfortunately, there are no guesthouses that meet that criteria. In the area, there are 24 guesthouses, some of them cheap, some expensive. Can you narrow down your choices? Sentence3: All booked and ready to go! The reference number is RJVNE0PT . Sentence4: Yes, 1 night will work. I've booked the hotel for you, and your reference number is FIINUE5N . What else can I help you with? Sentence5: My attempt to book your party was unsuccessful. Would you like to try a different length of stay, or a different hotel? Sentence6: Sure, I can book that for you. How many people will be staying and for how long also arriving what day? Sentence7: Yes please, book it for 7 people. Sentence8: What is your departure site and time? Sentence9: That will be all. Thank you. Sentence10: Hi! I'm looking for a train to Norwich on Saturday. Sentence11: Wonderful. Enjoy your stay in Cambridge! Sentence12: From Cambridge and I want to arrive by 20:30. Sentence13: I have a train that would leave at 18:36 and arrive by 19:55. It's 79 minutes long and costs 14.08 pounds. Would you like me to book it? Sentence14: Would 1 night work instead? If it does could I get the reference number please? Sentence15: If there are no 1 star guesthouses, please find me the cheapest one that includes free wifi. Sentence16: Alexander bed and breakfast is a 4 star cheap guesthouse with free interenet and parking located in the centre. Does that work for you? Sentence17: Yes Alexander bed and breakfast that has a star of 4 would be great. Sentence18: I am also looking for a place to stay. Can you find a 1 star hotel for me that is a guesthouse? Question: Who has spoken the sentence 3? (A) User (B) System

Answer: (B) System