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: You're welcome. Glad I could help. Have a nice day. Sentence2: Would you like to book the Bridge Guest House? Sentence3: They sure do! Sentence4: Ok, I recommend parkside pools in the centre of town, they are located on gonville place and are reachable at 01223446100. Sentence5: Great! Thank you for your help. Goodbye! Sentence6: That's great thanks. Also I need a hotel in the south. Sentence7: Okay, there are four places in town. Do you prefer a particular area? Sentence8: I'm sorry, but I don't need a booking anymore. Could you tell me if they have free parking? Sentence9: What day and time would you like to go? Sentence10: It doesn't matter. I will need the address, phone number, and area of town. Sentence11: Not really, just get me one with 3 stars please Sentence12: Okay, thanks. Do they also have free internet? Sentence13: yes they do have free parking Sentence14: Yes please, could you make a booking for me? Sentence15: I have 4 different options for you. 3 guesthouses and 1 hotel. The hotel is expensive, whereas the others are moderate or cheap. Do you have a preferred price range? Sentence16: Hello, I am planing to visit Cambridge and I am looking for a swimmingpool. Sentence17: The Bridge is fine, please. Sentence18: There are 2, The Bridge a moderately priced and the Lensfeild inthe expensive price range. Both are in the South and offer free parking and internet. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User