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: That'll do. I need 8 tickets. Sentence2: no but we have one leaving at 16.09 Sentence3: Thanks a lot for the service. Sentence4: I am going to cambridge for a one week holiday. I need to take a train from Leicester on Sunday. Sentence5: That's all, thank you so much! Sentence6: Is there a train leaving after 15:30 on Sunday? Sentence7: Sure the post code is cb22ad,phone number 01223302580,and the entrance fee is free. Sentence8: Thanks! i'm also looking for something to do in town, in the south. Sentence9: A college please. Sentence10: Yes, there are two. Sheep's Green and Lammas Land Park and Wandlebury Country Park. Do you have a preference? Sentence11: What kind of attraction are you interested in ? Sentence12: There are no colleges in the south to visit. How about a museum instead? Byard Art is fantastic! Would you like some more information on it? Sentence13: Wow, thanks. I might check them out later but the people I'm with think we should have a picnic in the park. Are there any in the south? Sentence14: I have several trains to bring you to Cambridge, the first one leaving Leicester at 5:09. Would that work for you? Sentence15: Okay. Your booking was successful. Your total fee is 241.92 GBP which can be paid at the station. The reference number is KZ0FFG5R . Sentence16: Is there anything else I may help you with? Sentence17: Thank you, enjoy the rest of your day. Sentence18: Lammas Land Park sounds like fun. Can you give me the post code, phone number and entrance fee please? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System