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: Sure, could you tell me the phone number, postcode, and address please? Sentence2: I have successfully booked your hotel. The reference number is QGZKE117 . Sentence3: Enjoy your stay! Good bye! Sentence4: The number to call them is 01223412299. Their postcode is cb17aa. Their address is 64 Cherry Hinton Road Cherry Hinton. Anything else for you today? Sentence5: When would you be staying there? Sentence6: It is a guesthouse in the east and is cheap and has a 4 star rating. Sentence7: Can you please help me find an expensive restaurant in the south? Sentence8: Hi, I'm looking for information on the Autumn House. It's a hotel. Sentence9: Taj Tandoori is a great Indian place in the south. Would you like to know more? Sentence10: That is all, thank you for your help Sentence11: On Sunday. I want to make sure it's the place I'm thinking of first. Can you provide me with information about the hotel? Sentence12: That's the one! Could you make a reservation for me? There are two of us coming in on sunday and we'd like to stay for 4 nights. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User