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: I need a centre attraction. Sentence2: Please give me information about when you want to leave and arrive. Sentence3: Yes, I would like to arrive at the restaurant by the booking time at 17:00 Sentence4: Boats sounds interesting! Sentence5: Booking was completed! the car is a black skoda Contact number : 07731972489 Sentence6: We have quite a few options, is there any cuisine in particular that you would like? Sentence7: Can you see if maybe there is a French restaurant with the same criteria? Sentence8: I have many attractions in the centre. Do you have a particular type in mind? Sentence9: Cote is an expensive french dining experience. Would you like to book a table? Sentence10: Can you book me a taxi from Scudamore's punting company to the restaurant? Sentence11: There are over 40 attractions in the centre, in every type of venue. Let's narrow it down a bit and I'd be happy to provide further details. Museum? Architecture? Boats? Colleges? Sentence12: I am not seeing any Mexican restaurants in the expensive price range in that area. Would you like me to try another search for you? Sentence13: Yes, are there options for mexican? Sentence14: Scudamores punting company and the cambridge punter both offer boating in the centre. Would you like their addresses? Sentence15: No, but could you tell me what their entrance fees are? Sentence16: Lets try 5pm Sentence17: Booking was successful. The reference number is : NYEUMZ53 . Sentence18: What types of attractions are there and what are the entrance fees? Sentence19: The booking was unsuccessful, do you have a different day or time? Sentence20: I'm also looking for a restaurant in the expensive price range and in the same area. Sentence21: I do not have any information on what their fee is, you may want to call them. They are reachable at 01223359750 Sentence22: Yes, give me a table for 6 people at 18:00 Sunday. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System