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'll need some additional information from you before we can proceed. Where will you be traveling to and on what day? Sentence2: Actually, I do need something else. A train home that leaves Cambridge after 16:45. Sentence3: I need to find a modern european restaurant in the south please. Sentence4: You all set the reference number is ALH3FL92, can I help with anything else? Sentence5: I can make the reservation for you. Sentence6: I have train TR2153 that will leave at 17:29 and arrive in Bishops Stortford at 18:07. Would that work for you? Sentence7: Your booking is successful. Your reference number is JCI12G5U . Is there anything else I can help you with? Sentence8: No thank you. That's it. Bye! Sentence9: I need to go to Bishops Stortford on Tuesday. Sentence10: Yes, the restaurant alimentum is a great choice, would you like me to book a table for you? Sentence11: Great! I just need the reference number. Sentence12: Thanks! Have a great day! Sentence13: Yes, please! I'd like a table for 3 on Monday at 13:00, please. Sentence14: No, that is all I need today. Thank you for your help! Sentence15: You are welcome. Have a nice day. Bye. Sentence16: That's perfect. Can you make a reservation for 3 on that train, please? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User