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: Yes, a table for one on Wednesday at 20:00. Sentence2: Can I make the reservation for you? Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : XT4L7KCY . Sentence4: Thank you that will be all I need Sentence5: I am looking for a restaurant that serves modern European food. Sentence6: moderate price range please and thank you that will be all Sentence7: Yes they have wifi Sentence8: The Centre has many choices, 69 to be exact. Do you have any food type or price range in mind? Sentence9: The Gonville Hotel is available in that area. Sentence10: What price range would you like? Sentence11: It is an expensive hotel and the address is gonville place. Sentence12: Okay can you tell me the address and price range of the Gonville Hotel? Sentence13: You are welcome enjoy Sentence14: Do they have wifi? Sentence15: No reservation, just a taxi from the hotel to the restaurant arriving by 20:00 Sentence16: I can suggest the riverside brassiere. Sentence17: Thanks. Now I can book my taxi from the hotel to the restaurant. Sentence18: Would you like me to reserve the hotel? Sentence19: Where will you be leaving from? Sentence20: Can you help me find a restaurant in the centre? Sentence21: all set for your taxi yellow audi Contact number 07456600776. Any thing else i can do ? Sentence22: Sorry I need to book a hotel first. Do you have a 3 star with free parking in the same area? Sentence23: I will also need a taxi. Sentence24: I want the taxi to arrive to the restaurant in time for my reservation there Sentence25: What time will you be leaving and what time you will like to arrive? Sentence26: Ok sure. I need brassiere Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User