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: Yes, that will. Can you please reserve a room for 4 nights beginning on Sunday. There will be six of us. Sentence2: The Acorn Guest House is in the north and moderately priced. Will that suit you? Sentence3: What area of town do you want to stay in? Sentence4: No thanks, that's all I needed. Sentence5: That is all I need, good day. Sentence6: I am excited to eat at some great restaurants during my visit. Can you help me find a guesthouse? Sentence7: I am also looking for an expensive Indian restaurant nearby. Sentence8: No particular area, could you give me a recommendation? Sentence9: I'll need a guesthouse that has free wifi that has a rating of 4 stars. Sentence10: 01223302330. Post code is cb21dp. Is there anything else you will need? Sentence11: Can I have the phone number and postcode please? Sentence12: In the centre please. Sentence13: Would you like me to book it for you? Sentence14: Okay, have a great trip! Sentence15: I was able to book your room per your request. Your reference number is : 40VQ9ANP . Was there anything else you needed? Sentence16: In what area would you like it to be? Sentence17: I would suggest this place the golden curry. Sentence18: Sure, got an area of town you want to stay in? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System