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: Ok, there are 4 trains that meet that criteria, what time would you like to leave by? Sentence2: That will be all, thank you. Have a great day. Sentence3: I don't care, do you have any suggestions? Sentence4: Where would you like to depart from? Sentence5: Hello, I'd like some information about colleges in the area that are interesting to visit Sentence6: Certainly, I have booked TR4734 arriving at 09:54 your reference number is VZ5HHW3E . Can I help with anything else? Sentence7: You're welcome! Have a great day! Sentence8: I suggest Christ's College in the center area. Entrance is free. The address is Saint Andrew's Street, the phone is 01223334900. Would you like the postcode? Sentence9: I need to leave from Leicester, and the train should arrive by 10:45 please. Sentence10: Thanks. I also need train going to cambridge on tuesday. Sentence11: I don't care when I depart, please book me one that is closest to the 10:45 arrival in cambridge. I just need one ticket. Sentence12: Which area do you prefer? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System