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: You are very welcome. Have a wonderful visit! Sentence2: Okay the gonville hotel looks good, it's in the city centre. Would you like a booking? Sentence3: I need a train leaving Cambridge on Sunday. Sentence4: Goodbye and have a safe trip! Sentence5: We have quite a few options available to you, where are you heading to? Sentence6: The Gonville does include the internet. Is that alright? Sentence7: I also need a place to stay. I would like a hotel with a 3 star rating and free parking. Sentence8: No thank you. I appreciate the help today. Sentence9: I want to confirm with you that the gonville does not need to include internet. Sentence10: I have completed the booking. The total fee is 79.67 GBP and your reference number is 58YNZ8EQ . Sentence11: Goodbye! Sentence12: I'm just looking for now. Can you recommend a hotel? Sentence13: Yes, for six people, please. I will need a reference number, as well. Sentence14: Yes, can I get the address please? Sentence15: Yes, and thank you kind person for helping me! Sentence16: The address is gonville place. Can I help you with anything else? Sentence17: Shall I book you a room then? Sentence18: TR9732 departs Cambridge at 19:59 and arrives London Liverpool Street by 21:27. Would you like for me to book that? Sentence19: There are 2 expensive hotels and 3 moderate price guesthouses meeting your needs. Does the area matter to you? Or the type of lodging? Sentence20: I need to arrive by 21:30 and go to London Liverpool street. Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User