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 sounds great! Could you give me the arrival time, travel time, and train ID as well? Sentence2: Okay, that's great! Thank you very much! That's all I needed. Sentence3: Sure. It's train TR8265, arrives at 10:43 in Cambridge and has a duration of 49 minutes. Can I book you seat? Sentence4: There are many expensive restaurants in the city. Do you have an area or type of cuisine that you'd prefer? Sentence5: I would recommend bedouin, address is 100 Mill Road City Centre,phone is 01223367660 and post code is cb12bd. Sentence6: No, that would be all. Thanks. Bye. Sentence7: Hey there, I need a train from stevenage that leaves after 09:45. Can you help? Sentence8: Alright, thanks for using Cambridge TownInfo centre! Have a great day! Sentence9: Maybe later. I am also looking for an expensive restaurant. Sentence10: We are going to cambridge and would like to leave on monday after 09:45. Thanks for your help. Sentence11: I would be happy to help with your request, what is your destination and what day will you be leaving? Sentence12: Is there anything else I can help you with today? Sentence13: Would a train departing at 09:54 work for you? Sentence14: No, I'll take your recommendation. I do need postcode, address and phone number, please. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System