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: Could you book a table for 1 at 16:30 on Monday? Sentence2: Your booking was successful. Your taxi will be a blue Audi and the contact number is 07434215242. Can I help you with anything else today? Sentence3: Your booking was successful. The table will be reserved for 15 minutes. Your reference number is : JGNMHYR5 . Is there anything I can do to assist you? Sentence4: I have it here. What would you like to know? Sentence5: I'm hoping you can help me find a particular attraction. Sentence6: Thank you that's all I needed today. Sentence7: Have a nice day and enjoy your trip! Sentence8: I'm looking for a place called cambridge and county folk museum Sentence9: I will also need a taxi to get from the attraction to restaurant. Sentence10: Cambridge and county folk museum is located on the west area at 2-3 castle street postcode cb30aq. Sentence11: Sure, what are you looking for? Sentence12: Thank you. I'm also looking for a particular restaurant called the Meze Bar Restaurant please. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System