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: There are 5 restaurants that fit your request. Are you interested in a specific type of food? There are 2 chinese, one indian, one italian, and one mexican. Sentence2: I also am looking for an expensive restaurant in the area of south, thank you Sentence3: Yes I would like the number and I also need to know what star rating the hotel has. Sentence4: That hotel has a 4 star rating and the number is 01223316074. Would you like to book that now? Sentence5: Thanks, that's everything I need. Have a nice day! Sentence6: To you as well! Goodbye. Sentence7: Great your reference number is XJVS7TQN Sentence8: Please make a reservation for tuesday. Sentence9: Can you help me find the hotel Worth House? Sentence10: On what day will you be dining there? Sentence11: Could you book me a table for 1 at the Indian restaurant for 11:15? I would also like the reference number. Thank you! Sentence12: The Worth House is located in the northern part of town at 152 Chesterton Road, would you like the phone number? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System