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: Is there anything further I can assist you with? Sentence2: It is in the Centre. Would you like me to check attractions in the East? Sentence3: i need info on some attractions Sentence4: Your hotel is confirmed, starting Friday for 4 days with 5 people. Your confirmation number is XBH5TB70 . Can I do anything else for you? Sentence5: no thanks for all of your help Sentence6: Yes, I would also like information about the express by holiday inn cambridge Sentence7: just get me the phone number of any that you will recommend Sentence8: It is an expensive place in the east, it is a hotel and not a guesthouse. Can I book you or answer any other questions? Sentence9: I just wanted to confirm that the attraction you recommended is located in the east part of town. I forgot to mention that. Sentence10: excellent, have a great day! Sentence11: Yes, please, 5 people for 4 nights starting Friday. Sentence12: What attraction type are you interested in? Sentence13: Nope thats everything thanks Sentence14: The phone number of old schools is 01223332320. Do you need anything else? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User