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: At 20:16 a train leaves for Cambridge duration of which is 79 minutes. Sentence2: I have about 19 different trains. Do you have a certain time you would like to leave after or arrive by? Sentence3: Allenbell does indeed have wifi. Would you like a reservation? Sentence4: Can you help me find a train leaving Tuesday from Norwich? Thanks. Sentence5: That sounds great, I want to find you the perfect place! Is pricing a factor, do you have a part of the city in mind? Sentence6: I want to leave after 20:15. Sentence7: I don't need a specific area. What do you recommend? Sentence8: I need more information please. What area of town? Sentence9: Booking was a success! Your reference number is: XJGR0GCN . Sentence10: Can you help with info on places to stay? Sentence11: The allenbell in the east is a cheap hotel with 4 stars. Sentence12: Yes please. I'm celebrating my anniversary with myself, so I need a room for 1 starting Tuesday for 4 nights. Sentence13: I would like a really nice place because I'm celebrating my 10 year anniversary. Something cozy and romantic. Sentence14: Booking was successful, the total fee is 17.6 GBP payable at the station. Reference number is : UK9225HY . Is there anything else I can do for you today? Sentence15: Yes, I can help with that. What are your preferences of area, price range, and type of accommodation? Sentence16: Does it have free wifi? Sentence17: Price is no concern for me. I need it booked for 1 person for 4 nights starting on Tuesday please. Sentence18: I would like to making a booking for one please. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System