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: Can you just book it for me? Table for 1 on Friday at 13:15. If you can, I would like the reference number. Sentence2: A free museum is a great choice. What is the address so I can go right away? Sentence3: None, what is one that you would recommend? Sentence4: I'd also like to find an expensive Indian restaurant. Sentence5: Yes, what is the attraction type for the museum of classical archaeology? Then, I will have another topic for you. Sentence6: I'm so bored! Can you find me something to do on the west end of the city, please? Sentence7: Yeah, how about 12:15? Sentence8: Unfortunately, booking was not successful. May I try another day or time slot? Sentence9: We've got 13 attractions in that area 5 colleges, 1 entertainment center and seven museum. Do you have a preference? Sentence10: I've found curry garden, would you like their information? Sentence11: i was unable to book at that time too, can we try some different time please Sentence12: The Museum of Classical Archaeology is located on sidgwick avenue in postcode cb39da. Can I help you with anything else? Sentence13: It is a museum located in the west. They are located on Sidgwick Avenue. What else can I help you with today? Sentence14: I find the museum of classical archaeology fascinating. It's also free! Would you like any more information on it? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User