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 would like to leave on Tuesday. Sentence2: Is that just Pizza Express or Pizza Express Fen Ditton? Sentence3: I will be departing from cambridge. Sentence4: That's all I needed today. Thanks for your help. Goodbye! Sentence5: Pizza express is a moderately priced italian restaurant in the centre. Do you want a reservation? Sentence6: Ok! You're booking was successful. Your reference number is 662ALFUF . Anything else I can do? Sentence7: Hi. Can you help me find a train? Sentence8: Can you also help me find some information on a restaurant? It is called Pizza express. Sentence9: I'm going to broxbourne. Sentence10: I sure can! Do you have a destination in mind? Sentence11: I can't make that reservation right now. Is there anything else I can help you with? Sentence12: Is there a certain time you would like to leave? Sentence13: Can you try for Thursday then? Sentence14: Booking was successful, the total fee is 143.19 GBP payable at the station . Reference number is : ZKT87GL0 . Sentence15: I'd like to leave at 20:15. There will be 8 people traveling with me. Sentence16: I am always happy to assist! Bye! Sentence17: Yes please, 8 people at 12:30 on Tuesday. Sentence18: Where will you be leaving from? Sentence19: Just Pizza Express please. Sentence20: Ok. What day will you be traveling? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System