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: is there anything else i can help you with? Sentence2: Bedouin is a wonderful African restaurant in the center of town. It's a little expensive, but the food and service is outstanding. Sentence3: Hello, I need a train to London Kings Cross after 21:45, please. Sentence4: No, that's all the information I wanted. Thank you so much for all your help. Sentence5: There are several going to kings cross, where are you departing from and when do you went to leave? Sentence6: The phone umber for bedouin is 01223367660. Can I help with anything else? Sentence7: Yes, I would be happy to do that for you. How many people would there be for that reservation? Sentence8: TR2634 can get you there by 21:00 it is 23.60 pounds per person, would you like me to book you? Sentence9: That should be it. Thanks. Goodbye. Sentence10: Your reference number is M5L3KBEV . Do you need anything else? Sentence11: Actually can i just have the phone number instead? Sentence12: Thank you for contacting us and have a nice day. Sentence13: I'm leaving from Cambridge on Monday. Sentence14: Im also looking for a restaurant by the name of bedouin. Sentence15: can you book that for me. Sentence16: Yes please book it for one person. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User