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: There is a hotel and a guesthouse available. Did you have a price range in mind? Sentence2: I can book the lensfield hotel on Tuesday for 5 people and 3 nights, is this alright? Sentence3: Hello, I am looking for a place to stay that has 3 stars. Sentence4: If you can't book it for 3 nights we can try two instead. Sentence5: I would like the hotel for 5 people for 3 nights starting on tuesday. Sentence6: Would another day or a shorter stay work? Sentence7: I can certainly help you with that! What area are you looking to stay in? Sentence8: I would like a hotel in the south. Sentence9: Yes, that would be great. Please send me the reference number, too. Sentence10: Ok, I can book you at the Lensfield Hotel. What day will you be arriving? Sentence11: You are welcome. Thank you for calling Cambridge TownInfo. Goodbye. Sentence12: No, that'll be everything. Thanks! Sentence13: I don't have a price range I just need it to be a hotel. Sentence14: I was able to successfully do 2 nights, your reference number is VH33JKKF . Can I help with anything else? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System