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 your price range? Sentence2: book for 5 people and get me the reference number Sentence3: Could you try the moderate price range to see if there are any available? Sentence4: I need to find a place to stay that has 4 stars and has free wifi Sentence5: Great. Are you looking for a train, hotel or attractions to visit while in Cambridge? Sentence6: Congratulations, you are all booked! The total fee is 189 GBP payable at the station.Your reference number is : RR4BSBW5 . Is there anything else I can do? Sentence7: Sorry there is no guesthouse fitting the description you asked for Sentence8: It should be expensive and a guesthouse. Sentence9: You're welcome. Is there anything else I can do for you? Sentence10: I am planning a trip in Cambridge. Sentence11: No thank you, I appreciate your help today. Sentence12: Yes there are 11. I recommend the Acorn Guest House. Would you like a reservation? Sentence13: I need a train that leaves Cambridge on Wednesday to arrive in Leicester by 12:15 please. Sentence14: Sure, for 5 people for four nights starting Wednesday. Sentence15: the TR9366 train arrives at 12:06. Sentence16: Thank you for your help. Sentence17: Okay I have booked that and your reference number is HUH8HH95 . Sentence18: Your welcome, have a great day! Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User