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: Sure, i would suggest going to the multiple nigh clubs that are in the centre and also located there are museums. does that sound like something you would like to experience? Sentence2: I'm also looking for a train from Cambridge to Stansted airport. Sentence3: Of course. The TR8363 would leave at 16:40 and arrive at 17:08. It would of course cost 8.08 pounds per ticket, and it would be a 28 minutes ride. Sentence4: There is a train: TR8363 that arrives at the airport by 17:08. How many people are traveling with you? Would you like me to book it? Sentence5: I would like to leave on Sunday and arrive by 17:15. Sentence6: Thanks for contacting Cambridge TownInfo centre! You have a great day! Sentence7: Thanks, that is all I need. Have a nice day. Sentence8: I have 5 museums that may interest you, 4 of them are free and 1 has an entrance fee of 2 pounds. Is there anything else I can help you with? Sentence9: What day and time would you like to leave? Sentence10: Can I get the travel time and departure time on that? Sentence11: Yes, I think we will go to the museums. Can I get the postcode for the museums and what do they charge for entry? Thank you. Sentence12: I'm planning my first trip to Cambridge and looking for places to go in the centre, can you give me some suggestions on what and where to go? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System