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 need a hotel in the center of town with a star of 0. Sentence2: I was able to book El Shaddai for 2, for two nights starting Friday. Your reference number is X7WHA1XL . Is there anything else I can help you with? Sentence3: Have a nice day. Sentence4: No, that's fine. Thank you for your help. Sentence5: How about cityroomz? They have free internet. Sentence6: Yes,address and phone number please ? Sentence7: Have a nice stay at the el shaddai. Thank you for contacting us and have a great day. Sentence8: I'm sorry, that isn't available. Would you like me to try the other one, El Shaddai? Sentence9: I would like the moderately priced hotel. Sentence10: The address of hotel El Shaddai is 41 warkworth street cb11eg and the phone number is 01223327978. Sentence11: I have 2 with 0 stars. One is cheap the other is moderately priced. Do you have a preference? Sentence12: The address is sleeperz hotel, station road cb12tz and the phone number is 01223304050. Is there anything else I can help you with? Sentence13: I would like to book that for 2 nights from Friday for 2 people. Sentence14: Yes as long as it's in the same price range. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User