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 have 2 cheap guesthouses and moderate to expensive hotels in the center of town. Do you have a preference?`` Sentence2: Cityroomz, located at Sleeperz Hotel on Station Road is moderately priced. Would you like me to book a room? Sentence3: There is no entertainment in the same area would you like somewhere else Sentence4: I am looking for a place to stay in the centre of town that includes free wifi. Sentence5: no, all saints church is free of entrance. Sentence6: Moderate would be best. Sentence7: i also looking for places to go in town.The attraction should be in the type of entertainment and should be in the same area as the hotel Sentence8: Yes, they offer free WiFi to guests. The address is: sleeperz hotel, station road. Anything else I can get you? Sentence9: There are actually 5 architectures in the area. Would you consider the all saints church? Sentence10: sounds good. Does it have an entrance fee? Sentence11: You're welcome. Have fun in Cambridge! Sentence12: Do they offer free wifi? If so, I would like to have the address, please. Sentence13: That's all i need. you have been very helpful. Thank you so much! Sentence14: Okay, could you look for one that is architecture instead? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User