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: It has a four star rating. What else can I do for you? Sentence2: I have booked for you train TR4202. he total fee is 14.08 GBP payable at the station . Reference number is : PI9JS0X7 . Sentence3: Cityroomz is 0 stars and moderately priced. Do you need assistance booking a room today? Sentence4: Hello, I need a hotel that's moderately priced, please. Sentence5: Could you please book for 1 person for 4 nights starting from Saturday. If 4 nights is not available, how about 2 nights. I also need the reference number. Sentence6: We couldn't do 4 nights, but I do have you booked for two. Your reference number is L4N1ZRYO . Anything else I can do for you today? Sentence7: What is the star rating of the arbury lodge? Sentence8: Would you like me to book arbury lodge guesthouse Sentence9: I need a train on Sunday to Cambridge, please. Sentence10: There are 202 trains, do you have a specific day time or departure in mind? Sentence11: Yes. I need the train on Saturday also. It should leave Norwich and arrive by 8:45. Sentence12: I am really looking for one with a zero star rating. What do you have available. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User