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: sorry what is the area again? Sentence2: I want one in the moderate priced range. What is the price range of Chiquito restaurant? Sentence3: Have a nice day. Sentence4: I need the address and phone number of a restaurant in the south part of town. Sentence5: There are nine restaurants in the south part of town. What kind of food would you like? Sentence6: What is the address for Pizza Hut Cherry Hinton? Sentence7: I'm afraid Chiquito restaurant bar is expensive. Pizza Hut Cherry Hinton is a moderately priced Italian restaurant in the south. Sentence8: I don't care. Sentence9: Thank you, goodbye Sentence10: Can you tell me what kind of food they serve? Sentence11: it is located in the south part of town Sentence12: Chiquito restaurant bar is in the south part of town. It's address is 2G Cambridge Leisure Park Cherry Hinton Road Cherry Hinton, and it's phone number is 01223 400170. Sentence13: Their address is G4 Cambridge Leisure Park Clifton Way Cherry Hinton. Sentence14: Chiquito restaurant bar serves Mexican food. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System