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, how about bedouin which serves African food and is in the center of town? Sentence2: I need a restaurant in centre and in the expensive prince range Sentence3: Booking was successful, the total fee is 151.19 GBP payable at the station . Reference number is : 3EF4MBB7 . Sentence4: Your reference number is A69RQEJA . The table will be reserved for 15 minutes. Sentence5: Great. Please go ahead and book it. Sentence6: Sure. I have a number of trains available. what day and time do you prefer? Sentence7: We have a wide variety of restaurants in the centre. Is there a particular type of food that you'd like? Sentence8: You are very welcome. let us know if you need anything else. Sentence9: Yes, please make a booking for 4 people. Sentence10: TR8080 arrives at 13:06, does that work for you? Sentence11: I don't have a preference, I just want to book a table for 4 at 11:15 on Thursday, anywhere is fine. Sentence12: Thanks so much. Good bye! Sentence13: This Thursday, and I would like to arrive by 14:00. Sentence14: I would like to take a train from Cambridge to Leicester. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System