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: I have made your booking here is the information:Booking was successful. The table will be reserved for 15 minutes. Reference number is : VVSOH0TQ . Sentence2: What's a good college to visit near the restaurant? Sentence3: Any college will be fine what do you recommend? I need the phone number for whichever you pick. Sentence4: christi's college is in that area and has free entrance. There phone number is 01223334900. Is there anything else I can assist you with? Sentence5: I would prefer the british food. Sentence6: I have cotto that serves moderate priced food. Would you like to book a table? Sentence7: I have 7 in the centre that serve british food. I have 4 in the moderate price range and 3 in the expensive. Did you have a preference? Sentence8: Thank you for choosing us and enjoy your stay. Sentence9: There are no crossover locations in Cambridge. Sentence10: There are 13 colleges in the centre. Is there a particular one you are interested in? Sentence11: Where's a good place to eat crossover food in Cambridge? Sentence12: That is all I needed. Sentence13: How about British restaurants in the Centre instead? Sentence14: Yes please make a booking for 8 people at 12:30 on friday. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System