You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: I need help, i just been the victim of a robbery. Sentence2: You are most welcome! Sentence3: Sure, here it is: Parkside, Cambridge. Sentence4: I am not hurt but I need to get in touch with the police, can you send me the address? Sentence5: Are you hurt? Sentence6: Thank you for your help Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: No, you have been a great help. Thank you. Good bye. Sentence2: I would be happy to help you find a train. Can you confirm where you will be departing from? Sentence3: I quite enjoy Byard Art Museum located at 14 King's Parade. It is free also. Can I give you any more information? Sentence4: I could use some help finding a museum to visit. Sentence5: Which area is it in? And can you also give me the post code? Sentence6: Yes, I'll be departing from peterborough and it needs to arrive by 20:45. Sentence7: TR9805 will arrive at 20:38, would that work for you? Sentence8: Byard Art is south and the postcode is cb21sj. Would you like information on another attraction? Sentence9: I am looking for a train on Friday to Cambridge Sentence10: There are many lovely museums in Cambridge. Would you prefer a certain type of museum, or a particular neighbourhood? Sentence11: Yes please book me tickets for 5 people Sentence12: It's been my pleasure. Thanks for using our service. Good day. Sentence13: May I help you with anything else, such as a restaurant? Sentence14: No, that one sounds perfect, thank you. Sentence15: The booking was successful the price is 82.5 pounds your reference number is 7HQD6471 . Do you need anything else? Sentence16: I'm open to just about anything. What's your favorite? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I'm afraid I couldn't get you that booking. Would you like me to try another place or a shorter stay? Sentence2: I'm afraid that booking was also unsuccessful. Would you like to try a shorter stay or another hotel or guesthouse? Sentence3: Yes can I get the postcode, and it's a concerthall you said? Sentence4: I was successful in booking 1 night at alexander bed and breakfast on tuesday for 6 people. your reference number is R6FET1MJ . Can I help with anything else? Sentence5: I'm pleased I could assist you. Sentence6: Alexander B & B has both free wifi and parking. It also has 4 stars! Would you like to make a booking there? Sentence7: Hi, i want to find out about the man on the moon attraction please. Sentence8: Yes, please. For 6 people for 3 nights starting on tuesday Sentence9: Excellent, I also need a cheap guesthouse, please. Sentence10: Yes it is a concert hall and the postcode is cb12lf. Sentence11: Alexander bed and breakfast is in the cheap price range in the centre of town. Sentence12: Please try for one night. Sentence13: I need free parking and wifi. Sentence14: How about for 2 nights instead? Sentence15: No that was it. Thank you so much for your help. Sentence16: the man on the moon is a concerthall found in the center of town. Do you need their address and contact details? Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System