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 would like it to serve food from the americas. Sentence2: 'Hotel du vin and bistro' and 'galleria' Sentence3: Certainly, can I book your table at hotel du vin and bistro or would you prefer a table at galleria? Sentence4: i have booked you a taxi, red tesla, phone number is 718 850 4433. Sentence5: Thank you have a great day. Sentence6: Do they offer free parking? And can I get the phone number for them please. Sentence7: There are 2. Did you want me to book one of them? Sentence8: Your table has been booked and is reserved for 15 minutes, reference number is M32YYIJN . Can I help you with anything else? Sentence9: Yes, there is free parking at Hamilton Lodge. The phone number is 01223365664. Sentence10: How about european food? Sentence11: Is it possible to arrange a taxi to take me from the hotel to the restaurant by 16:00? Sentence12: I have the information pulled up. What would you like to know about it? Sentence13: I need to book a table for 3 people at 16:00 on friday at galleria Sentence14: I would like to book a table for three on Friday, at 16:00. Sentence15: I'm also looking for a hotel called hamilton lodge. Sentence16: There are many moderately priced restaurants that meet your criteria, what type of food are you looking for? Sentence17: What are the names? Sentence18: Thank you that's all that I needed Sentence19: I am looking for a restaurant in the moderate price range in the centre of town. Sentence20: Unfortunately I could not find any restaurants serving food from the Americas in the moderate price range. Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Thanks. You too! Goodbye. Sentence2: Get back in touch if you need help in the future. Goodbye. Sentence3: I need information on trinity college Sentence4: You're welcome! Have a great day. Sentence5: Okay, I've pulled up Trinity College. What information do you need? Sentence6: No, that is all I need today. Thank you very much! Sentence7: Ok. Trinity college is a college and the address is trinity street. Anything else? Sentence8: I need to know the attraction type and address. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Your taxi is booked, look for a blue ford, phone number is 07891245613, any other questions? Sentence2: That is everything. Thank you for your help. Sentence3: I need a taxi to go between the guesthouse and the college. I want to leave the college by 07:30. Sentence4: Um really? There is no 4 star accommodations with free parking in all of Cambridge? I have a hard time believing that. Sentence5: I am still getting no results. How else may I help you? Sentence6: I am looking for the saint catharine's college Sentence7: I found that info st catharines college is located at kings parade, has free entrance and its phone number is 012233338300. Can I help you with anything else? Sentence8: Could you look again, 4 star and free wifi, does not need to be hotel can be any room. Sentence9: I need hotel tips, can you help? Sentence10: I definitely can help with that. Do you have a price range in mind? Sentence11: Sorry, there aren't any. Could I check for something else? Sentence12: Are there any places to stay that offer free wifi? Sentence13: I don't have a price in mind. As long as it has free wifi and parking, I just need the name, area, and type please Sentence14: I apologize, we actually have 19 options matching your query. Do you have a preference for price range? Sentence15: Okay, have a great time in town! Sentence16: No, price doesn't really matter. I do prefer 4 stars though, and free parking. Sentence17: What about with wifi and no parking? Sentence18: I'm sorry. It appears that there are no four star hotels in Cambridge with free parking. Can I help with something else? Sentence19: The acorn guest house is a guesthouse in the north. May I help with anything else ? Sentence20: I'm sorry, there really are none that match your criteria. Are you sure you don't want to lower your star rating? Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:

Answer: (A) User