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: Of course! Your booking is complete. The car type is blue Skoda. The contact number is 07574638307. Sentence2: The phone number is 01223446100, is there anything else I can help you with? Sentence3: I'm looking for park in the east. Can you help me? Sentence4: Thank you. Can you arrange taxi service to take me from the park to Curry Price by 12:30 please? Sentence5: Great thanks. Have a great day! goodbye Sentence6: Yes I am looking for a restaurant that serves Indian food in the east. Sentence7: What price range? I have expensive and moderately priced. Sentence8: Thank you so much! Sentence9: I would be happy to help. There is 1 park in the east, Cherry Hinton Water Play. Would you like any additional information? Sentence10: Yes, it's been booked. The booked car is blue Skoda. The contact number is 07574638307. Sentence11: Will there be anything else? Sentence12: You're welcome. Is there anything else I can help you with? Sentence13: I don't care, whichever one is supposed to have better food. I need a table for 1 at 12:30 on Thursday. Sentence14: Okay I went ahead and booked you at the Curry Prince, which is moderately priced and your reference number is IG75ROGD . Sentence15: Yes, can I have their phone number please? Sentence16: Can you help me get a taxi to the restaurant in time for the reservation? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User