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, please. We will be arriving on Saturday and staying 4 nights. There are 6 people in our party. Sentence2: I do not have any hotel or guesthouse matching that description Sentence3: Okay, enjoy your visit to Cambridge! Sentence4: I have 32 locations offering free wifi. Do you have a particular area of town in mind? Sentence5: Okay, can we try one with a star of four? Sentence6: Okay, can you give me the phone number for ask? Sentence7: The avalon guesthouse is four starts and meets your needs, would you like me to book you? Sentence8: I need a place to dine. Sentence9: I want a cheap italian place in the centre Sentence10: I need a place to stay that has free wifi. I don't need parking though. Thank you. Sentence11: No that will be all thanks. Sentence12: a star of 1 and in the North part of town thank you Sentence13: There are three options to choose from. I recommend ask. Sentence14: The phone number at ask is 01223364917. Would you like me to make a reservation for that? Sentence15: What type of cuisine are you looking for and what area of town? Sentence16: Booking was successful. Reference number is: M7X0176H . Is there anything else I can help you with today? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System