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: Actually, I'd like some information about an attraction in the centre dealing with multiple sports. Sentence2: I'd like some information about the University Arms Hotel. Sentence3: I could not find any attractions for multiple sports in the centre of town. Is there perhaps another attraction type or area of town I could search for you? Sentence4: No I just needed to know the information. Thank you, that's all I needed. Sentence5: There are 5 colleges in the centre. Corpus Christi or Downing College are very nice. Would you like more information about one of them? Sentence6: Yes, it is a hotel. Any other questions that I can help with today? Sentence7: I never got the address for Corpus Christi College. Could you give that to me? Sentence8: Great, and what is the address? Also, can I just confirm that University Arms Hotel is actually a hotel? I don't like guest houses. Sentence9: Sure, their phone number is 01223338000. There will be an entrance fee of 2 pounds. Sentence10: Yes that's everything, thank you. Goodnight. Sentence11: If I can just get the address of the University Arms Hotel please. Thanks. Sentence12: Have a great visit and please call back if you need additional help. Sentence13: Sure, the address listed for University Arms is regent street, postcode cb21ad. What else can I help with today? Sentence14: Can you give me the phone number and address for Corpus Christi College? Sentence15: Thank you for contacting the Cambridge TownInfo centre. Goodbye. Sentence16: How about a college in the same area? Sentence17: Certainly! The address is king's parade, is that all you needed? Sentence18: sure. it is 4 stars and expensive. they have internet, free parking & located in the center on regent street. phone number 0122331241. shall i make a reservation? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System