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: What is the price of the fair and could you tell me what is the arrival time into Peterborough? Sentence2: The price is 16.50 pounds and the train will arrive in Peterborough by 13:56 Wednesday. Would you like me to book a ticket for you? Sentence3: I'd like to go to peterborough and leave after 12:45, I have to attend a meeting beforehand. Sentence4: I booked you one seat on TR1879 departing Cambridge for Peterborough on Wednesday at 13:06, Reference: xu1qlhvw . Can I help further today? Sentence5: You're welcome, I hope you enjoy your time in Cambridge! Sentence6: Yes, one ticket please, can I also get the reference number? Sentence7: The Broughton House Gallery is located at 98 King Street, postcode cb11ln. Their phone number is 01223314960. Is there anything else you need? Sentence8: TR1879 leaves at 13:06 on Wednesday. Will that work for you? Sentence9: I am also looking for a museum in centre. Could you give me the address, postcode and phone number of one? Sentence10: There are 5 trains out of Cambridge on Wednesday. Do you have a departure time in mind? Sentence11: I need to take a train out of Cambridge, I will be leaving town on Wednesday. Sentence12: That's all I need right now. Thanks, you have been very helpful! Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System