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: Okay. Enjoy your dinner. Sentence2: Bedouin serves African food, is in the center, and in the expensive price range. Do you want me to book this restaurant? Sentence3: There are 33 expensive resturants in the city center. We could narrow it down more by food type. What type of food would you like? Sentence4: Thank you, that's all I need today. Sentence5: Yes, I'd like to book a table for seven at 19:15 on Tuesday. Sentence6: I was able to book you at the Cambridge chop house. Reference number K1T50MHG . Sentence7: How about a different restaurant in the area and price range? Sentence8: I would like to find a restaurant in the expensive price range that is located in the city center. Sentence9: May I have the reference number please? Sentence10: It is actually not open then, another day or place to dine? Sentence11: Ok I have booked you at Bedouin on Tuesday at 19:15 for 7 people. Sentence12: I do not care about that. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System