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: Train TR8792 departs at 09:50 and will arrive in Ely at 10:07. The total travel time is 17 minutes. Anything more I can help with? Sentence2: Okay I would like to make a booking for 5 people and 4 nights starting from wednesday. Sentence3: Will you needing a reference number? Sentence4: Twenty one accomodations meet your needs. What part of town are you planning to stay in? Sentence5: I will be traveling to ely, no need to book, but i need the train number, travel time departure time and arrival time Sentence6: Your welcome, have a great day! Sentence7: Ok. Where are you departing from? Sentence8: Can you help me find a place to stay that's four stars and has free wifi? Sentence9: I also need a train on Friday, departing after 9:00. Sentence10: Booking was successful. Reference number is : JVC5MSAV . anything else today? Sentence11: Where will you be traveling to? Sentence12: Yes, of course. Sentence13: i am departing from cambridge Sentence14: That is all. Thanks for your time. Sentence15: There are 21 places in that criteria. What area of town? Or perhaps a need for free parking? Sentence16: It doesn't matter. Like I told you, it just needs to be a cheap 4 star place with free wifi. Sentence17: The Alexander bed and breakfast is the best option. Sentence18: That doesn't matter as long as it's cheap. Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User