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: Sounds nice, I will book for 2 people at 14:30 on Wednesday. Sentence2: Oh wait. I really want to find a museum. Sentence3: Your reservation number is ZK239M8H . Is there anything else I can help you with? Sentence4: Sure thing! Which area and price range? Sentence5: No, thanks! But will you please find me an expensive restaurant in the Centre part of town? Sentence6: an expensive British restaurant, what would be one you would recommend? Sentence7: What do you suggest? I don't know the town, so I don't have any idea where to go. Sentence8: I have about 23 museums to choose from. Is there a certain area of town I can focus on? Sentence9: Yes i need to book at hotel. Sentence10: I would recommend the Broughton House Gallery, it is in the centre and the entrance fee is free. Would you like the address or phone number? Sentence11: No thank you. Sentence12: Have a good time. Sentence13: There are many expensive restaurants in Centre. Is there a certain type of cuisine that you prefer? Sentence14: oh may I suggest midsummer house, it's great and I go there all of the time Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System