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 just need one ticket please. I need the train price as well. Sentence2: Thank you that is all I needed today. Sentence3: I will travel in Sunday. Sentence4: We have many to choose from, is there a certain area you'd like to be in? Sentence5: Pembroke college will blow your mind, free adminssion located at trumpington street, postal cb21rf, phone 01223338100. Are there any other questions today? Sentence6: I appreciate your help. I am also interested in looking at a college while I am in Cambridge. Could you help me? Sentence7: I apologize, TR5009 is available. It is a 28 minute train ride, leaving Cambridge at 18:40, arriving at Stansted Airport by 19:08. Your reference number is 090MN9HI . Sentence8: I need a train for stansted airport and I need to arrive by 19:30 please. Sentence9: I want to leave from Cambridge. Sentence10: You're welcome, let me know if I can assist with anything else. Sentence11: There is no longer a TR5009 but have booked you for the next best. The price is 8.08 GBP Sentence12: Okay. Where will you be leaving from please? Sentence13: Actually, can you tell me the travel time for that? Sentence14: ok the TR5009 arrives at 19:08. Sentence15: Yes can you book that for me please? Sentence16: certainly, how many tickets do you need? Sentence17: What day will you be traveling on? Sentence18: No particular area, would you choose one for me? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System