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: Does it have free parking? Sentence2: how about a cheap hotel with free parking? Sentence3: I was able to book you at el shaddai. Your Reference number is : 4WHOTORJ . Sentence4: Yes. I need a place for 3 on Wednesday at 17:15. Sentence5: I have two guesthouse available. They both offer free parking and are 0 stars. One is in the north and one in the centre? Do you want a specific area? Sentence6: I also need a hotel in moderate price range and star rating of 0. Sentence7: No, I am all set for today. You have been very helpful. Thanks. Bye. Sentence8: Great! That booking was successful and your reservation number is K1T4IC74 . Sentence9: Cityroomz matches those requirements. Would you like the phone number, or a reservation? Sentence10: The area doesn't matter. Can you pick one and book a room for 3 people for 5 nights on Wednesday. Sentence11: Thank you for using our service. Good-bye! Sentence12: Nice place. It is located at 64 Cherry Hinton Road, Cherry Hinton. Can I book a table for you? Sentence13: Is there anywhere else which would offer free parking? Sentence14: Not with those criteria. We could start a new search if you like. Sentence15: I have booked your taxi. Your car is a blue volkswagen, they can be reached at at 07653689405 if you have any questions. Can I assist you with anything else? Sentence16: I'm afraid it does not offer free parking. Would you like to book a room? Sentence17: Can I get a taxi from the hotel to the restaurant, I would like to arrive shortly before the booking time. Sentence18: I need to find a restaurant called taj tandoori Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System