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: The nearest one to the hotel. Sentence2: Actually, I don't need one near a hotel. I just need the phone number and address of an expensive one. Sentence3: Yes the Eraina is expensive and their address is Free School Lane City Centre and their telephone is 01223368786 Sentence4: Thank you very much. That was all I will be needing today. Sentence5: What hotel are you staying at? Sentence6: I have booked you a blue skoda. The contact number is 07822607219 Sentence7: Queen's College is on the west side of town, on Silver Street. Their postcode is cb39et. Sentence8: Can you verify the type of place this is and the address please? Sentence9: It is a college and the address is silver street. Anything else I can help you with? Sentence10: Alright, I want you to book me a taxi from Queen's College to the Eraina. I'll be leaving the college at 12:00. Sentence11: Ok thank you for using this service and have a nice day. Sentence12: I'm looking for restaurant in the centre area that serves European food please. Sentence13: Where can I find the Queen's College? Sentence14: I have several listed from moderate to expensive. Do you have a preference? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System