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: Can you give me the train ID for the 10:24? Sentence2: Do you want the earliest train? Sentence3: There are 105 trains making that trip do you have a day you need to travel? Sentence4: It needs to leave after 9:15 Sentence5: TR0031 leaves at 9:24, would you like me to book it for you? Sentence6: Thank you very much. I appreciate your help. Sentence7: That might be cutting it a little close. Maybe one an hour later? Sentence8: Sure, the TR2635 train leaves at 10:24 and arrives at 10:52 with a travel time of 28 minutes. Sentence9: Thank you, have a good day. Goodbye. Sentence10: I need a to find a train departing from stansted airport going to cambridge. Sentence11: I am looking to leave on Thursday. Can you also please give me the train ID for this trip? Sentence12: Did you need anything else today, or may I close this conversation in our system? Sentence13: Okay I have a 10:24 that arrives at 10:52. Sentence14: That's all. Thank you. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System