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: Your welcome. It was a pleasure assisting you today. Have a wonderful day. Sentence2: La Raza is an inexpensive Spanish restaurant at the centre. Would you like the address? Sentence3: Yeah, my wife and kids are demanding Spanish food. Can we keep it on the cheap side, please? Sentence4: Broughton House Gallery is completely free. The address is at 98 King Street. Sentence5: Thank you that was all I needed. Sentence6: What area would you like? Sentence7: Something close to the restaurant would be nice. Sentence8: Yes, I would like the address please. Sentence9: 4 - 6 Rose Crescent postal cb23ll, can I assist with anything else today? Sentence10: What is the entrance fee and address? I think this sounds like a great place to visit. Sentence11: We are also looking to visit a local museum. Do you have any recommendations? Sentence12: Broughton House Gallery is located in the centre at 98 king street. It has free entrance. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System