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: I recommend Castle Galleries. Sentence2: No, Castle Galleries is free to enter! Sentence3: If that is all, I would like to thank you for using our service. Sentence4: Does Castle Galleries have an entrance fee? Sentence5: Yes, I would like to go to the Sesame Restaurant and Bar. I would need to book a taxi to get from the museum to the restaurant. Sentence6: Great, wonderful! That's all I needed. Sentence7: I am looking for places to go here in the centre of town. Could you please assist me? Sentence8: I have the Sesame Restaurant and Bar that is a more expensive Chinese restaurant also located in the town centre. Would you like more information or I also have others? Sentence9: It doesn't matter, whatever you recommend will be fine. As long as it's in the same area as Castle Galleries and serves Chinese food. Sentence10: I would like to go to a museum please. Sentence11: What kind of place? Are you looking for entertainment, dinner, culture, or what? Sentence12: Would you like a cheap, moderate, or expensive restaurant? Sentence13: Wonderful. I am also looking for a Chinese restaurant near the Castle Galleries. Can you book me a table for 7 people on Sunday at 12:30? Sentence14: I have booked you a blue toyota taxi and its contact number is 07271370296. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System