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: Could you recommend one for me and help me make a booking for sunday? Sentence2: Can you help me find an expensive restaurant in the center of town? Sentence3: I also need places to go that are in the same area as the restaurant and should be in the type of architecture. Sentence4: I have 4 people in my party. Can I book a table for 17:00 on Sunday? Sentence5: There are many options. Do you have any preferences on type of food? Sentence6: That's great. I think we'll try that out. Thanks for the info. Goodbye. Sentence7: No, I would just like to know what the fee is, if any? Sentence8: The old schools has a free entrance fee. Sentence9: No problem. Thanks for using our service today. Sentence10: How about Midsummer House Restaurant, it serves British food in centre. How many people are in your party? Sentence11: I booked that, and your reservation number is RBYPR70C . Do you need any more information about the restaurant? Sentence12: Does a entrance fee make any difference? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User