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 I was able to book you into the Marriott Hotel and your reference number is CQE0WWXH . Sentence2: All of the 4 star hotels I have listed have wifi. Is that okay or would you like me to look for a hotel with a different star rating? Sentence3: Yes please and in the same price range. Sentence4: I was unable to book that, would you like me to try something else? Sentence5: I guess it's OK if they have it, as long as they won't charge me for not using it. But 4-star accommodations are a must. Sentence6: How about a place in any area with free wifi. Sentence7: Will you be needing anything else today? Sentence8: Thank you so much for your help. Sentence9: For how many nights and how many people will be staying? Sentence10: I have nothing in the south that matched your criteria, only west and centre. Sentence11: Yes, please. Sentence12: Okay I have the Cambridge Belfry which is a 4 star cheap hotel in the west part of the city. Would you like for me to book it for you? Sentence13: Thank you for using our system! Sentence14: I dont want wifi, just somewhere with four stars. Sentence15: Are there any in the South side of the city? Sentence16: I have two 4-star hotels on the west side and one in city centre. Do you have a location preference? Sentence17: I need it for 7 people for 4 nights staring from Tuesday please. Sentence18: Nope. You have been so helpful. Thank you! Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User