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 need a place to stay located in North Cambridge that has free parking. Sentence2: I am also looking for a good restaurant in the same north part of town. Sentence3: I have made those reservations for you your reference number is G3PHR3FO . Sentence4: Yes, I would like a 3 star guesthoise please. Sentence5: The address for the Chinese restaurant is 191 Histon Road Chesterton. Sentence6: Alright, have a nice day! Sentence7: Please book a taxi. I want to depart the hotel at 06:30 and go to the restaurant. Give me car type and contact info Sentence8: No, that is all I need today. Thank you. Sentence9: Can you tell me the address for the Chinese restaurant Sentence10: There is a Chinese and an Indian moderately priced restaurant in the north part of town. Would you like to book one? Sentence11: I have 8 guesthouses and 2 hotels in that area with free parking. Do you have a price range or rating in mind? Sentence12: hamilton lodge suits all your description Sentence13: There are many good restaurants in that area. Do you have a cuisine preference? Sentence14: I would like it to be in the moderate range please. Sentence15: A red skoda will be arriving to take you to the Golden Wok. The contact number is 07740908114. Is there anything else I can do for you? Sentence16: Okay, please book that 2 people and 4 nights starting from Friday. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User