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: the reference number is 9g1eycif . Sentence2: The abbey pool and astroturf pitch is located at pool way, whitehill road, off newmarket road. Do you need anything else? Sentence3: I'm looking for an attraction in the category of swimming pool. Sentence4: That is all I need. Thank you for your help! Sentence5: Yes, west, east, south and north. Sentence6: Could you book rooms for 7 people for 4 nights starting from Saturday? Sentence7: I will need the reference number. Sentence8: Yes, I'm also looking for a guesthouse in a moderate price range. Sentence9: I've got four pools for you. What area are you in? Sentence10: The area doesn't matter, but it should have 4 stars please. Sentence11: What area would you like to stay in? Sentence12: I'm pretty open. Can you list the areas? I'll choose one of the four. Sentence13: The acorn guest house is awesome. I would suggest that place. Sentence14: Please tell me about the locations of some pools in the south. Sentence15: One in the east is fine. I need the address please? Sentence16: I am sorry but there are none in the south. I have one east, two north and one centre. Sentence17: No problem. Enjoy your stay. Sentence18: I have you booked for 4 days. What else can I do for you? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System