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'm glad I could help you today. Good bye. Sentence2: nope, leave me alone now please Sentence3: I would be happy to get you that information. It's a guest house located in the west area of town. What else would you like to know? Sentence4: Where will you be traveling from? Sentence5: Okay! What would you like to know? Sentence6: Okay, well have a great day. Sentence7: Booking was successful. Your reference number is PEA9MNU6 . Will that be all for today? Sentence8: Thank you! Bye! Sentence9: Do you need a taxi to or from anywhere? Sentence10: Okay, you're all set. I've booked your trip on train TR2061. The total cost is 80.8 GBP, payable at the station, and the reference number is HI5QN7N7 . Sentence11: I think I am ready to book. Can you get me a booking for 8 people for 4 nights, starting from Sunday? Sentence12: Thank you so much! You're very helpful and I appreciate all your work. I'm looking forward to this trip! Sentence13: I want to leave Bishops Stortford and arrive in Cambridge by 12:00, please. Sentence14: TR2061 arrives by 06:07. Will that do? Sentence15: My best friend told me about a great place they stayed at. It was called Finches Bed and Breakfast. Can you tell me a little about that place? Sentence16: Actually, I need some information on a train heading into Cambridge. Sentence17: Yes please book that for 8 people and provide me with the reference number. Sentence18: I am looking for information in Cambridge Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User