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: Thank you for all of your help! Sentence2: Booking was successful. Reference number is : ANH718Q1 . Is there anything else I can help with? Sentence3: Yes, I need to book it for 5 people. Sentence4: Can you help me find a guesthouse with free parking? Sentence5: Will you need anything else right now? Sentence6: Yes please book for 5 people. Sentence7: I also need a train departing from cambridge going to broxbourne. Sentence8: I have one train leaving at 9:01 that day. Would you like to book a ticket? Sentence9: Thank you, you as well! Sentence10: Thank you very much! Sentence11: The alexander bed and breakfast is a 4 star facility with internet and free parking. Their number is 01223525725. What day would you like to arrive? Sentence12: Great can you book it for 5 people for 3 nights starting monday? Sentence13: I would like to leave on Wednesday and the train should leave after 09:00. Sentence14: What day would you like to travel and when do you want to leave? Sentence15: I have booked Train TR3279 departing at 9:01. The total fee is 89.5 GBP payable at the station. Reference number is : 0G1S9EH9 . Sentence16: Definitely! Do you have a price range and/or area in mind? Sentence17: I would like the guesthouse to be in the cheap range. Sentence18: Thanks for booking with us. Have a great day! Sentence19: We have a couple of choices for 4 star ones in the center and the east. Shall i just pick one for you? Sentence20: That will be all. Thank you for all of your help. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System