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: thank you that will be all Sentence2: What cuisine do you want? Sentence3: What day and time do you need to travel? Sentence4: We have nine Indian restaurants in the center. Does price range matter? Sentence5: I would like Indian cuisine please. Sentence6: Hello, I need a place to eat in the center of town. Sentence7: thanks, I'll also need a train from cambridge to kings lynn. Sentence8: The TR1854 leaves for Kings Lynn at 10:11. Would you like me to book you? Sentence9: Ok, you are all set for Friday at 18:30. They will hold the table for 15 minutes. Your reference number is VC2RCPYE . Sentence10: Yes. 7 people on Friday. 18:30. Sentence11: May I suggest The Gandhi? It is in the center of town, its on the cheaper, most affordable price range, and it serves great food. Sentence12: I would like a cheaper place please. Sentence13: That would be great, thank you! Sentence14: I'll be traveling on Monday. I'll be leaving after 9:15. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User