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, it is a 4 star guesthouse located at 138 Perne Road. Very nice and clean place. Sentence2: I sure can! There are 44 attractions in the centre. Do you have a preferred type? Sentence3: Thank you so much, that is everything that i need Sentence4: Thank you. I also need to find an attraction in the Centre. Can you help me with that. Sentence5: Can you arrange for a taxi to pick me up at the Church at 15:15 and take me to the hotel? I'll need car type and contact number Sentence6: All Saints Church is an architecture interest and has free admission. It is located on Jesus Lane. Sentence7: Great! I need reservations for 3 people, for 3 nights, beginning on Thursday. Sentence8: Booking was successful. Reference number is : KYWFGUNH . Sentence9: Hi, I am planning a trip. Have you heard of a particular hotel? I think it is called the Carolina Bed and Breakfast. Sentence10: I hope you have a great time. Sentence11: The car is a red audi and the contact number is 07570056398. Sentence12: Can you pick one for me and give me the address ? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System