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: Any area is fine. Could you book a table for 7 for me at your favorite place? We're looking for something at 18:45 on Tuesday. Sentence2: Of course. It's located at Cambridge Leisure Park Clifton Way Cherry Hinton postcode cb17dy. Phone 01223412430. Sentence3: Can you try italian food instead? Sentence4: Can you recommend a restaurant that serves Corsica food in the expensive price range? Sentence5: No, thanks. I'm all set. Good bye. Sentence6: I'm not concerened about pricing, but I would like a 4 start hotel in the east. Sentence7: I don't have a match for that food type. I apologize. Would you like to try something else? Sentence8: Thank you. Could you please send me the address and phone number. Sentence9: I'd recommend the allenbell on 517a coldham lane. Its 4 stars and has free wifi and parking. Would you like a room? Sentence10: Glad I could be of help, goodbye! Sentence11: Ok, I've made a reservation for you at frankie and bennys. The reference number is O7FO0UHU . Sentence12: now find me a stay in the east and should have a star of 4 Sentence13: I have 6 results matching your request. What price range would you like cheap or moderate? Sentence14: We have five choices, any area preference in mind? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System