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, there are 18 colleges. Do you have any particular area in mind? Sentence2: How about just try looking for any cinemas in the south? Sentence3: I am sorry there are none in the south. Would you like to try another area instead? Sentence4: Lovell Lodge is located at 365 milton road. The pricing is moderately priced, but the parking is free. Sentence5: Booking completed! Booked car type : red audi Contact number : 07369509134 anything else i can help you with? Sentence6: 00872208000 is the phone number. The address is cambridge leisure park, clifton way. Sentence7: We have Cineworld Cinema in the South area. Sentence8: the hotel at 23.30 get me the contact number and car type Sentence9: Okay, which location would you like to be picked up at, and at what time? Sentence10: That sounds great! Can I have their address and phone number, please? Sentence11: I would also like to book a taxi to travel between the two places. Sentence12: I want to visit some colleges. Sentence13: Thanks, I need some info in lovell lodge, specifically price range, address and whether parking is included. Sentence14: I would like it to be in the South. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User