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: Yes, I am looking in the expensive price range. Also, I would need free parking. Sentence2: Yes, in the same price range please. Sentence3: Yes. Can I get the reference number so I can give it to them when we arrive? Sentence4: Yes, can you please book me for 6 people and 4 nights starting on monday? Sentence5: Great, I've got you booked for 4 days starting Monday for 6 guests is this correct? Sentence6: Hello, I'm looking for a 4 star place on the westside to stay at. Sentence7: Thank you, that's what I needed. Sentence8: Is there anything else I can do for you today? Sentence9: Is there another expensive place to stay? Sentence10: I was able to book University Arms Hotel, reference number is VOF0UGNG . Sentence11: The Huntingdon Marriott Hotel is located in the west and in the expensive price range. Would you like to book? Sentence12: There are two hotel and one guesthouse that match what you are looking for. Do you have a price range? Sentence13: No thanks for all of your help and putting up with a pain like me! Sentence14: I am sorry. The system will not give me a confirmation number. Would you like me to try another hotel? Sentence15: You were great. Hope you enjoy your stay. Have a great day. Sentence16: There are no other options in the expensive range, would you like me to try something else? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System