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: You are welcome. Enjoy Cambridge. Bye. Sentence2: Vue Cinema is in the center of town, at The Grafton Centre, East Road. Sentence3: Yes, of course. There are multiple trains departing from Cambridge on Friday. Do you have a destination in mind? Sentence4: The entrance fee is not listed but the phone number is 08712240240. Is there anything else I can help you with? Sentence5: Yes, I'd like to go to peterborough and should leave afer 20:00. Sentence6: I am also looking for a cinema in the centre. Sentence7: Your booking was successful. Your reference number is MUF6GL55 . Sentence8: I have a train leaving at 20:34 would that be okay? Sentence9: Can you locate a train departing from Cambridge on Friday? Thanks! Sentence10: Great that was all I needed thanks for your help today. Sentence11: Could you give me the entrance fee and phone number? Sentence12: That would be great. Can you book 5 seats for me please? What is the reference number. Thank you. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System