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: Hi! I am looking for a nice place for dinner. I would like something in the centre that's expensive. Sentence2: Sure the number is 01223314960 and the address is 98 king street. Sentence3: It was a pleasure to assist you. Take care. Good day. Sentence4: Thank you so much! I appreciate your time, that is all the help I need today. Sentence5: Sure. Can I have the phone number and address? Sentence6: You don't have any more specifications? Bedouin is quite nice, it serves african food. Would you like a table here? Sentence7: There are over 11 options for a museum. May I suggest broughton house gallery? Sentence8: I have many options for you. So what type of food are you in the mood for? Sentence9: Yes, please. I also want to find a museum in town. Sentence10: What would you suggest? I need a reservation for 6 at 12:00 on thursday and I'll need the reference number then too please. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System