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'm sorry, apparently none of our guesthouses can accommodate 7 people for 2 nights on Wednesday. Would you like to try a different day or stay period? Sentence2: Actually, let's find some lodging accommodations first. I'd like something moderately priced with a 4-star rating. Oh, and I'll have my laptop with me so I'd like wifi to be included. Sentence3: You're welcome. Enjoy! Sentence4: We're fortunate, Cambridge has many attractions. What did you have in mind? Sentence5: I would like to visit a park. Can you tell me about any parks in the city? Sentence6: There are several attractions in Cambridge. What type of attractions are you interested in? Sentence7: There are 11 guest houses available. Is there is certain area of the city you prefer? Sentence8: Hmm. I suppose we could leave a little sooner. Are there any that can accommodate us for one night? Sentence9: I was able to book you A and B guesthouse for 1 night, reference number is EQG0KVRJ Sentence10: Any area is fine, can you book one for 7 people for 2 nights starting on wednesday? Sentence11: I am traveling to Cambridge and excited about seeing local tourist attractions, any suggestions for me? Sentence12: Thank you, that's all I need for now. Sentence13: Great! Thank you! I'm also looking for places to go in town. Sentence14: Wandlebury Country Park is in the south of town, would you like to know more? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System