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: Thank you. I also need info on a college to visit in the town centre. Anyone will do. Whatever you recommend. Sentence2: Okay your booking was successful and you reference number is 9H9V7J2Z . Sentence3: Goodbye! Enjoy your time in Cambridge! Sentence4: Hi, I have a business meeting and I'm looking for an expensive place to eat in the city centre. Sentence5: Great thanks, what is their entrance fee and phone number? Sentence6: Thank you for all your help. Goodbye. Sentence7: Yes, please book a reservation at Fitzbillies for 4 people at 13:30 on wednesday. Oh! Can I please get the reference number? Sentence8: Can you search for British food instead? Sentence9: I'm sure Moroccan food will impress my clients. Are there any restaurants that serve it? Sentence10: their phone number is 01223338000 and the admission is 2 pounds Sentence11: Corpus christi college located at king's parade and the postcode is cb21rh. Sentence12: Unfortunately you won't be able to impress your clients. We don't have any Moroccan restaurants in town. Do you want to look for something else? Sentence13: Sure, I can help you with that. Did you have any specific requirements? Sentence14: Yes, there are several. Would you like an expensive one such as Fitzbillies to impress your clients? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User