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: we have a lovely architecture called all saints church it is free admission Sentence2: That's all I needed. Thanks! Sentence3: I would like to try an expensive, italian place while visiting cambridge. Sentence4: How about cafe uno or don pasquale pizzeria? Sentence5: I love pizza that will work can I get the address? Sentence6: That's perfect, could you book me a table for 4 at 16:15 on Friday? Sentence7: Thank you for using our system today! Sentence8: can you suggest any attractions in the same area? I need the entrance fee if any and attraction type Sentence9: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DDLKGEVP . Sentence10: Yeah you were great. I will be sending your supervisor a compliment about you. Sentence11: You are welcome. I was happy to assist you. Sentence12: The address to Don Pasquale Pizzeria is 12 Market Hill at City Centre. Would you like the phone number too? Sentence13: I have 5 of them. 4 in the centre area and one in the south. Would you like more information? Sentence14: Staying in the centre would be more convenient. What are my choices? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System