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, please book rooms for 7 people for 3 nights starting on Monday. Sentence2: The Acorn Guest House is a moderately priced guesthouse in the north with free wifi. Would you like me to book it for you? Sentence3: Okay, well, how about mid-price range then? Sentence4: I would like the hotel to be in the north please. Sentence5: Good morning, I need a place to stay that has free wifi and that is in the expensive price range. Can you please tell me what is available? Sentence6: The booking was unsuccessful. Want to try another time? Sentence7: I do not have any expensive hotels in the north with free wifi. Would you like me to look in a different price range? Sentence8: Yes, please. 7 people, Monday, for 3 nights. Sentence9: I have 5 hotels that fit those qualifications, do you want to stay in a specific part of town, or is there a star rating you're looking for? Sentence10: Archway house is available. It is a moderately priced guest house in the north with wifi. Your reference number is TBHIHEJT . Would that work for you? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System