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: There are plenty of attractions in the West. What type of attraction do you fancy? Sentence2: I need a taxi to commute from the hotel to the college, leaving the hotel at 22:15. Sentence3: A hotel would be good, please. Sentence4: Not a problem. I see several that fit that description, so let's narrow it down a bit more. Would you like to stay in a guesthouse or hotel? Sentence5: Did you have a particular area of town in mind? Sentence6: Where would you like to depart from Sentence7: Great I also am looking for some place to go for an attraction in the west part of town. Sentence8: Churchill college is a great free attraction. The postcode is cb30ds. Would you also like the phone number? Sentence9: Yes, please! For 3 people for 4 nights starting Thursday. Sentence10: The booking was successful. Your reference number is: 529EH27L . Can I do anything else for you today? Sentence11: Yes, I need to book a taxi. Sentence12: I have the Cambridge Belfry which is cheap, located in the west, is a hotel with free internet and parking. Would you like me to make you a reservation? Sentence13: The phone number for churchill college is 01223336233. What time do you need a taxi? Sentence14: No but I would like free parking and a star of 4 please. Sentence15: Hello, I'm looking for a cheap place to stay that includes wifi in cambridge. Sentence16: Surprise me! I'm always up for an adventure. I will need the address and entrance fee. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User