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: Yes, the address is Warkworth Terrace cb11ee. Is there anything else I can find for you? Sentence2: You are all set, the reference number is S42UNZJV, can I help with anything else? Sentence3: No that will be all thank you. Sentence4: What day will you be coming in? Sentence5: They offer free admission to the museum. The postcode is cb39da. Anything else I can do for you? Sentence6: What information are you looking for? Sentence7: My pleasure. Enjoy your stay! Sentence8: Could you provide me with the address of the Warkworth house? Sentence9: I need it for 4 people for 2 nights starting Monday. Sentence10: I am looking to book at the warkworth hotel. Sentence11: I would like to find some info on the warkworth house hotel. Sentence12: Just the postcode and entrance fee please. Sentence13: Warkworth house is a guesthouse hotel located in the east. It is a moderately priced 4 star hotel. The Warkworth house provides internet and parking. Sentence14: I would like some information about the Museum of Classical Archaeology. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User