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: It has 2 stars. May I help you with anything else? Sentence2: Yes, I'd like to book a table for 7 for Sunday at 14:45. Sentence3: Thank you for using our system! Sentence4: Your car from the Ashley Hotel to Graffiti is booked.The car type is a Black Volkswagen and the contact number is 07898395762. Is there something else I can assist with? Sentence5: When would you like to leave? Sentence6: Great thank you so much that's all I needed today. Sentence7: I've booked your reservation at Graffiti for Sunday 18/06/2017 for 7 people. Reference number 3GQ3ITLZ . Sentence8: It is on Hotel Felix Whitehouse Lane Huntingdon Road. Would you like me to book it? Sentence9: Where do you want to be picked up? Sentence10: I just need to get to the restaurant by the time the reservation starts. Sentence11: Certainly. Where are you departing from and where are you going? I also need the time you are leaving or need to arrive. Sentence12: No, not really. It just needs to be a hotel. Sentence13: Excellent. I'm also looking for a place to stay. It should have free parking and free wifi. Sentence14: How about the Ashley Hotel? It is on the North side of town and has free wifi and free parking. Sentence15: Hello. I'm trying to find a restaurant called Graffiti. Can you help me locate it? Sentence16: Please have the taxi pick me up at the hotel. Can I get the taxi contact number and car type? Sentence17: That sounds like it might be great - how many stars does the Ashley have? Sentence18: An hour after I arrive at the restaurant sounds about right. Sentence19: I can help with that. Is there a particular area that you would prefer to stay in? Sentence20: I also need a taxi to take me somewhere. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User