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: I am sorry there are no guesthouse in the expensive range. Would you like to try a hotel instead? Sentence2: Perfect! Thank you for your help. Sentence3: Can you look at the cheap price range for me please? Sentence4: We have 9 hotels to choose from. Is there a particular amount of stars you're looking for, or location? Sentence5: Thanks so much. That is all I need. Have a good day. Sentence6: I'm looking for an expensive guesthouse to say at. Sentence7: The address of Autumn House is 710 newmarket road, and the phone number 01223575122. Sentence8: Yes please for 3 nights from Wednesday for 6 people please. Sentence9: Yes please. One in the same price range. Sentence10: I need a cheap hotel for 6 people on wednesday for 3 nights please. Sentence11: Good news! I got you into Autumn House instead and you still have free parking and a cheap price for your stay. Your reference number is E3MXBFLL . Sentence12: Unfortunately there is no expensive hotel with free parking. Would you like me to search in a different price range? Sentence13: I'm sorry but I was unable to book that. Shall I try another hotel? Sentence14: Allenbell guesthouse is available. It's in the cheap price range and has free parking. Would you like me to book it for you? Sentence15: Awesome. Happy to help. Good-Bye! Sentence16: Do you have a hotel with free parking? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System