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 sounds like a good choice. Can you book it for me for 3 people starting Saturday? Thanks Sentence2: I was able to book the hotel for you. The reference number is BTTS9GYC . Is there anything else I can help you with today? Sentence3: There are eight accomodations of the hotel type with free parking. What part of town do you prefer? Sentence4: I need a train from norwich to get to the hotel by 16:30. Sentence5: The Cambridge Belfry is an inexpensive, 4 star option on the west side with free wifi and free parking. Sentence6: The west, please. And can I get free wifi? Sentence7: Okay I have a train tat gets to Cambridge at 15:35. Would you like me to book that for you? Sentence8: It doesn't really matter, just need to get there by 16:30. Sentence9: I want a place to stay. Find me a hotel that includes free parking. Sentence10: I have several available. When do you want to leave? Sentence11: I would like to stay for 3 nights. Sentence12: Sure, I can do that. How many nights would you like it for? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User