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: I really do not have a preference on the area. Which one would you recommend? Sentence2: We have a large number of colleges, could you tell me the area you would like to visit one in? Sentence3: christ's college is free and located in the centre. Would you like anything else today? Sentence4: The booking was successful. Your reference number is: DKI36RGY . Is there anything else I can do to help you today? Sentence5: Okay, I'm glad to have assisted you today! Sentence6: A red volkswagen is booked. 07772378395 is the number. Do you need more help? Sentence7: The phone number is 01223334900 Sentence8: Actually, yes. I wanted to visit a college whilst I'm in town. Could you recommend one for me? Sentence9: There are many options that are 4 star. Is there a particular area or price point you would like to stay in? Sentence10: That is all I need, thanks. Sentence11: Hi, I'm looking for a guesthouse. Do you know of any 4-star properties? Sentence12: Acorn Guest House located in the North is a 4 star location with free parking and wifi, would that suit your needs? Sentence13: I will also need a taxi between them. I need to leave the hotel by 24:45. Sentence14: Can you give me the phone number for it? Sentence15: No particular area but free parking would be nice Sentence16: Yes please book that for 5 people for 3 nights starting on Saturday. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System