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: Great! Have a lovely trip! Goodbye! Sentence2: I don't really have a preference. Anything is fine. Sentence3: I was unable to book that for you. Would you like to change the length of your stay? Sentence4: You might enjoy the Broughton House Gallery located at 98 King Street. Is there any other information you need? Sentence5: It seems there are not any locations that fit that criteria. Is there anything you could change regarding your preferences? Sentence6: The acorn guest house meets all of your preferences. Would you like me to book a room? Sentence7: I have 11 museums in the centre of town available, do you have a preference? Sentence8: Yes, I was able to book for 2 nights. Your reference number is QD303GCI . Sentence9: It is free to visit. Is there anything else i can do for you? Sentence10: No anywhere would be fine but I would like a guesthouse with free wifi. Sentence11: Could you see if they have 2 nights starting on tuesday? Sentence12: Could you tell me how many people will be staying? Sentence13: Yes, I am looking for an expensive hotel to stay that includes free parking. Sentence14: I have many that meet your demands. Do you have a part of town you prefer to stay in? Sentence15: How about a moderately priced guesthouse instead of expensive? Sentence16: Yes, please. I'll need the room for three nights starting on Tuesday. Sentence17: No that was it! Thank you so much. Sentence18: I'm also looking for a museum in the centre of town. Sentence19: Thanks. I just need the entrance fee for that gallery please. Sentence20: Just one person please. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User