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 looking for a place to stay. I'd prefer a guesthouse with four stars. Sentence2: We have 11 moderately priced guesthouses that are 4 stars. What area do you want to stay in? Sentence3: The same time. Sentence4: We have several 4 star guesthouses. What side of town are you looking to stay in? Any budget in mind? Sentence5: a and b guest house would meet this criteria. It is located in the east. The phone number is 01223315702. The post code is cb12dp. Will that be all? Sentence6: Yes, that's everything. Thanks for your help! Sentence7: The TR8070 train leaves Leicester for Cambridge on Saturday at 09:09. This is the most appropriate choice for your needs. Would you like me to book it? Sentence8: I have quite a few, when were you planning your stay? Sentence9: If there's nothing else I can do for you, have a great stay. Sentence10: Neither. I am looking for a train departing from Leicester and going to Cambridge that's leaving Saturday after 08:30. Sentence11: Of course, are you looking for a hotel or attraction to visit? Sentence12: Sure, I can do that. Did you want to narrow it to a specific area of town? Sentence13: I'd like a moderately priced place please. Sentence14: No thanks, I was needing the train ID but you already gave that to me. Thanks so much. Sentence15: I am looking for information in Cambridge Sentence16: Area of town doesn't matter. Sentence17: If you could recommend any one of them that would be great. I need the postcode, phone number and the area the hotel is in please. Sentence18: Thanks for using our service! Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System