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 am looking for Asian Oriental. Sentence2: I am glad we can help. enjoy your stay ! Sentence3: Corpus Christi is my favorite, and well worth the 2-pound admission fee. Their phone number is 01223338000. Sentence4: There are 21. What kind of cuisine would you like? Sentence5: yippee noodle bar meets that criteria! Sentence6: There are 13 colleges in this area. Maybe we can narrow your search. Are there certain colleges or is there certain information I can help you with? Sentence7: Ok, good bye enjoy your day. Sentence8: That is all thank you Sentence9: I have no preference but can I get a phone number to one of them? Sentence10: Ok. I was able to book that table for you. Your reference number is V0XV1NRC . Sentence11: I am also looking for a moderately priced restaurant in the same area as Corpus Christi. Sentence12: i need information about colleges in the centre part of town. Sentence13: Thank you, that is all I need. Sentence14: thanks so much for all of your help! Sentence15: Is there anything else I can assist you with today? Sentence16: Great. Can you please make a reservation for 4? We'd like to arrive around 18:45 on Wednesday. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User