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 also need reservation for food. Sentence2: No, don't worry about it. I already got a reservation earlier. That is all I need. Sentence3: Sure, for 5 people at 13:45 on Friday. Sentence4: Hello, can you tell me about some Asian Oriental restaurants in the centre? Sentence5: I recommend j restaurant. Would you like a reservation? Sentence6: The TR8519 train leaves at 5:35 and arrives at 5:52 Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 9Z2BJHO4 Sentence8: Okay, what day are you traveling and what is your destination? Sentence9: make a booking for the same group of people. Sentence10: Would you please recommend one? Sentence11: Booking was successful, the total fee is 22 GBP payable at the station. Reference number is : J71IZZAE . Is there anything else I can assist you with today? Sentence12: I need to get from ely to cambridge, on that same Friday. Sentence13: I am will need a train. Sentence14: Thank you for using our service today. Sentence15: There are several. Would you like a list of all of them, or do you have a preferred price range? Sentence16: Do you know what kinda of food you want. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User