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 am excited about visiting a particular attraction in Cambridge. Can you help me? Sentence2: Yes, please. What is the postcode? Sentence3: yeah sure why not! that would be dope! Sentence4: No problem. The post code for the fitzwilliam museum is cb21rb. Is there anything else I can help you with? Sentence5: The fitzwilliam museum is located in the centre area of town and is free to enter. Would you like more information? Sentence6: Ok, I can book you a room at the Arbury Lodge Guesthouse. Is that good? Sentence7: No thank you, you been so helpful, have a wonderful day! Sentence8: Thank you for using our system! Sentence9: We have 79 attractions listed at this time. Was there anything in particular you were looking for? Sentence10: Yes. I am looking for a place to stay that has 4 stars and includes free wifi. Sentence11: I am looking for the fitzwilliam museum Sentence12: I have confirmed your booking at arbury lodge guesthouse for 3 nights starting Monday. Your reference number is WAI4ET4D . Would you like help with anything else? Sentence13: Yes please. Book a room for 4 people for 3 nights, beginning Monday. I need a reference number. Sentence14: We have at least 33 four star hotels with internet, would you like one close to the museum? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User