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 is all I need. Sentence2: Oh yes, the Sitar Tandoori is great Indian restaurant on our east side of town. Do you need me to make a reservation for you? Sentence3: Yes, could you book a table for 6 on Friday at 11:45? Sentence4: Yes, I need some help and information pertaining to a particular restaurant. The name of the restaurant is Sitar Tandoori. I'd like some information on the place if you can help. Sentence5: If you could find one in the same price range that would be best. Sentence6: I was able to book pipasha restaurant, reference number is ZO0089US Sentence7: Thank you for calling. Have a great day. Sentence8: I am sorry, I am unable to make a reservation for 6 at that time. Would you like me to try and find another restaurant? Sentence9: I have a few more, moderate or expensive, which do you prefer I book? Sentence10: That's unfortunate. Yes, is there something else in the same area? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System