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'd like to be in the centre of town. Surprise me with the type! I need to book for 8 people on Wednesday 16:00. Reference number please? Sentence2: I'm a foodie and desperately need to find a restaurant in the centre. I'm treating myself so anything in the expensive range is perfect Sentence3: I also need a place to stay. Cheap guesthouse will do. Sentence4: Hang on, I need to check on that. Sentence5: Thank you. That is all I needed. You have been a wonderful help. Sentence6: Okay just let me know Sentence7: OK, you're booked at the Alexander, reference #6HRQ154C . Can I help you with anything else today? Sentence8: Okay, great! How many will be staying, for how many nights, starting what day? Sentence9: As long as it's cheap, then yes. Sentence10: What time do you need to leave? Sentence11: Alright, I need rooms for the same group on the same day. We'll be staying for three nights. Sentence12: Here's the information about your car: type : red tesla Contact number : 07274986037 Sentence13: Booking at midsummer house restaurant was successful. They serve british food, and the table will be reserved for 15 minutes. Reference number is : 4X5NDCA9 . Sentence14: Thank you, and have a good day! Sentence15: Alexander Bed and Breakfast is located in the centre, rated 4 stars and has free parking and internet. Would you like me to make a reservation? Sentence16: We'll need to get to the restaurant on time so we'll need to arrive by 16:00 to avoid losing our table. Be sure to provide contact number and car type. Sentence17: What type of food would you like to try? I have many different places. Sentence18: yeah, i need a taxi to get me from the hotel to the restaurant. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User