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 have christ's college in the centre part of town. The entrance fee is free. Sentence2: I have a train that arrives by 07:55. Would you like me to book that for you? Sentence3: a college please Sentence4: I am not ready to book seats quite yet thank you. I do need to find a place to visit while in town though. Sentence5: There are 18 colleges in Cambridge. What part of town would you like it to be in? Sentence6: You misunderstood, I'm looking for a college to visit while I'm in Cambridge. Sentence7: I don't have a certain part of town. Pick one that you recommend and I will need the area and entrance fee. Sentence8: The total travel time for TR0953 is 79 minutes and will cost 14.08 pounds per ticket. Would you like to reserve a seat? Sentence9: Okay. What is your destination? Sentence10: I need to arrive in Norwich by 8:45 Sentence11: I'm looking for information on trains leaving Cambridge on Saturday Sentence12: I'm sorry but there are no colleges in Norwich. Are there any other areas or type of place I can look up for you? Sentence13: Please contact us if you need further assistance during your visit. Sentence14: Not just yet. What is the travel time? Sentence15: No thank you, that will be everything. Sentence16: Cam you tell me more about the place? Sentence17: The college is on saint andrew's street. Can I help you with anything else today? Sentence18: What type of attraction are you looking for? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System