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: Yes, we can stick to British please Sentence2: There are 21 different restaurants that follow those criteria. Did you want to stay within the british theme or try something else? Sentence3: Yes I would like to book a table for 3 people at 20:00 on Wednesday. Sentence4: Restaurant one seven serves British food in the centre area at moderate prices. Would you like to book there? Sentence5: I am sorry the Booking was unsuccessful can I help you find another place in the same area and price range? Sentence6: I am disappointed but willing to try another place in the same area and price range. What do you recommend? Sentence7: I have you booked for a table of 3 at 20:00 on Wednesday, would you like a confirmation receipt? Sentence8: You're welcome! Your table will be reserved for 15 minutes. Enjoy your meal! Sentence9: Please provide me information on the restaurant one seven. Sentence10: The Oak Bistro was available to be booked, your reference number is EO5VQ6EJ . Sentence11: Thanks for all of your help you were great! Sentence12: Yes, please give me the reference number. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User