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: Would you be able to tell me whether there are any multiple sports venues in the center of town? Sentence2: Absolutely, what kind of food would you like? Sentence3: Not, that's all for today. Goodbye ! Sentence4: Okay I have one in the center of town called Nandos City Center. Would you like a reservation or their telephone number? Sentence5: So glad I could help. Have a wonderful day. Goodbye! Sentence6: Yes, may I please get the phone number and the postcode as well? Sentence7: I want some Portuguese food in the same area. Sentence8: Yes, the phone number is 01223334860 and the post code is cb21dq. Sentence9: I'm also looking for somewhere to dine. Can you help with that? Sentence10: I'd like you to reserve a table for me at 15:15 on Friday for 1 person. Sentence11: Your table for 1 has been booked. Reference number is : G48PAWW0 . Will you need a taxi? Sentence12: There no places that match those criteria, but there is one in east. Sentence13: Actually, let's try looking for a college instead and still in the centre of town. Sentence14: There are 13 colleges in the center of town. Most of them are free. Downing College on Regent Street is beautiful. Would you like the phone number? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User