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: That's what I want. Please book it for Thursday for 3 people staying 2 nights. Sentence2: How about trying the Gonville Hotel? Sentence3: Is it located in the east? Sentence4: Yes, that is located in the east. Sentence5: There are no other hotels located in the east. Is there another area you would prefer? Sentence6: I"m sorry but in that price range and star rating there is only the holiday express. Could we try another star rating? Sentence7: I can try the Lensfield hotel in the south, the university arms hotel in the centre, the marriot in the west, or the gonville hotel in the centre. Sentence8: Yes, thanks, that's all I need. Have a nice day. Sentence9: Yes, I would. How about a different hotel in the same price range? Sentence10: Yes, the star does not matter, just try the same price range, please. Sentence11: I'm sorry, I was unable to book the hotel for you. Would you like to look for a different place? Sentence12: So glad to help! Have a great day. Good-Bye! Sentence13: I'm looking for an expensive 2 star hotel. Sentence14: Just any hotel in the same price range please. Sentence15: Yes, I was able to book the Gonville hotel, Starting on Thursday for 2 nights for 3 people. Your reference number is 5VNA5FPP . Would that work for you? Sentence16: I have the express by holiday inn cambridge with internet and parking. Would you like me to book that for you? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User