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: Okay I successfully booked it. Reference number is : MGYR3882 . Sentence2: Goodbye to you as well and have a nice stay! Sentence3: I don't have a preference. Pick one that you like? Sentence4: Do you mean Kings Lynn station for your departure site? Sentence5: Yes, I need to get to Cambridge by 17:15. From the Kings Lane station. Sentence6: Thanks. I am also looking for some Korean food in the north part of town. Sentence7: That works, can I get an address? Sentence8: how about da vinci pizzria? Sentence9: I need a train that is leaving on wednesday. Sentence10: Then can I do a search for one that serves Italian food instead? Sentence11: Do you have a destination in mind? Sentence12: No thank you. That was all I needed to know. Thanks and goodbye. Sentence13: Yes, it's located at 20 Milton Road Chesterton. Do you need to book a table? Sentence14: unfortunately, there aren't any korean restaurants in that area. Sentence15: Yes. I need to book tickets for 8 people. Sentence16: What is your price preference? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User