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 have 14 different restaurants. Is there a type of cuisine you prefer? Sentence2: Booking was successful. The table will be reserved for 15 minutes.Reference number is : HLEN9T9L . Sentence3: I would like an Indian food restaurant in the expensive range. Sentence4: Okay, could you give me the entrance fee and phone number information for your favorite museum there? Sentence5: Can you tell me if there is a concerthall in the same area as this restaurant, if not is there a museum? Sentence6: Thanks! I don't need any more help today. Bye! Sentence7: Have a wonderful time. Sentence8: The Cafe Jello Gallery is great, the phone number is 01223312112 and the entrance fee is free. Sentence9: There are 5 options in the west in that price range. One of my faves is India House. Would you like a reservation? Sentence10: We will be in the west part of town and would like to go to a restaurant while we are there. Sentence11: Yes, please. I need a table for one at 17:00 on Tuesday. Sentence12: I'm sorry, there is not a concert hall in the west. There are 7 museums, though, and most of them are free to enter. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System