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: An attraction of any type would be fine as long as it's in the centre, please. Sentence2: I want to know where I can go in the town centre of Cambridge. Sentence3: The address listed for Old Schools is simply Trinity Lane. And their postcode is cb21tt. Is there anything more I can do for you today? Sentence4: No thanks, but I am interested in getting a tax from Old Schools to the Cambridge Chop House. Can you help? Sentence5: What kind of food would you like and what price range Sentence6: Can you please recommend one and give me their postcode and phone number? Sentence7: Can you provide me the full address including postal code? Thanks. Sentence8: There are many places to go in the centre. Are you looking for an attraction or restaurant? Sentence9: Yes, I would also like to find an expensive restaurant in the same area. Sentence10: I would prefer British food and an expensive price range if possible. Sentence11: I would like to leave Old Schools by 19:00. Sentence12: I have three restaurants in the town centre that meet your needs. Might I suggest the Cambridge Chop house or Fitzbillies restaurant? Sentence13: I'm happy to have been of service. Goodbye! Sentence14: Thank you that will be all I need. Sentence15: Old Schools is an architectural attraction on Trinity Lane that has no entrance fee. Their phone number is 01223332320. Can I help you with anything else? Sentence16: Yes tell me one of those recommendations. Sentence17: I could recommend old schools. It is architecture and free to see. Would you like more information? Sentence18: What time will you be needing the taxi service for? Sentence19: Okay your all set! A red lexus will be picking you up the contact number is 07885505407, is there anything else I can help you with today? Sentence20: The Cambridge Chop House is a favorite of mine. It's located at 1 Kings Parade. Would you like me to book it for you? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User