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: Okay your all set! Reference number is UTI90SWFB . Anything else today? Sentence2: Do you want to stay in a particular area of town? Sentence3: I need a hotel to stay in that has free parking. Sentence4: Sure thing, I have three options would you like me to book one for you? Sentence5: Alright, your reference number for the train is CD9P0QQT . Sentence6: Yes, I need one ticket please. Sentence7: Yes, one person two nights from Thursday. Sentence8: Please let us know if we can be of any further assistance. Have a great day! Sentence9: What is the name of the hotel? Sentence10: Thank you, that is all I need. Sentence11: Just a hotel with free parking, free wifi and a star of 0. Sentence12: I do not have any place fitting that criteria. Perhaps some other perimater? Sentence13: Can you see if you find one with a start of 4? Sentence14: The hotel is huntingdon marriott hotel Sentence15: There is one that leaves at 15:06 and arrives at 15:56 for 16.50 pounds. Would you like reservations? Sentence16: Yes, I need a train from cambridge to peterborough on monday. I want to leave after 14:45 Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User