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: That sounds good, I have a group of seven and we want to eat at 20:00 on Friday. Sentence2: I want one in the certre area and in the moderate price range. Sentence3: Thank you goodbye. Sentence4: Unfortunately I wasn't able to get the reservation for you. Would you like me to try somewhere else? Sentence5: I've heard good things about Riverside Brasserie, they serve Modern European cuisine. Would you like to see if they have tables available? Sentence6: I have found some restaurants. They serve asian oriental, british, chinese, european, gastropub, international, italian, lebanese, modern european, spanish, and turkish. Sentence7: Can you help me find a restaurant please? Sentence8: Good news! Booking was successful. The table will be reserved for 15 minutes. Reference number is : ZXIRY17R . Sentence9: Thanks for all your help. Good bye. Sentence10: That would work, please book that. Sentence11: I don't care what type of food they serve. What would you recommend? Sentence12: What about the Copper Kettle? They serve British cuisine. Sentence13: Certainly, to narrow it down, do you have a preference for what part of the city it is in or what type of food is served? Sentence14: Can you recommend another moderately priced restaurant located in the centre? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System