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

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: sure, there are five in that area. Sentence2: Okay can you please give me the address and phone number to one that you recommend? Sentence3: Hello, I am looking for a restaurant called hotel du vin bistro. Sentence4: Yes, do you happen to know what their price range is? Sentence5: I'll need a taxi to get to the restaurant from the college Sentence6: Thank you, I am also looking for colleges in the west area, can you give me more info on those? Sentence7: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence8: I have the Hotel Du Vin and Bistro located at 15 - 19 Trumpington Street. Their phone number is 01223227330. Is there anything else you'd like to know? Sentence9: When would you like to depart or arrive by? Sentence10: churchill college is in the west. it is free. their address is storey's way and their phone number is 01223336233. is there something else i can help you with? Sentence11: It is a moderately priced restaurant. Sentence12: I want to leave the college by 17:45. Sentence13: look out for blue audi and the contact is 07704105675 Sentence14: Thanks so much for all of your help today. I won't be needing anything else. Bye. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User