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

Sentence1: I am sorry there are no guesthouse in the expensive range. Would you like to try a hotel instead? Sentence2: Perfect! Thank you for your help. Sentence3: Can you look at the cheap price range for me please? Sentence4: We have 9 hotels to choose from. Is there a particular amount of stars you're looking for, or location? Sentence5: Thanks so much. That is all I need. Have a good day. Sentence6: I'm looking for an expensive guesthouse to say at. Sentence7: The address of Autumn House is 710 newmarket road, and the phone number 01223575122. Sentence8: Yes please for 3 nights from Wednesday for 6 people please. Sentence9: Yes please. One in the same price range. Sentence10: I need a cheap hotel for 6 people on wednesday for 3 nights please. Sentence11: Good news! I got you into Autumn House instead and you still have free parking and a cheap price for your stay. Your reference number is E3MXBFLL . Sentence12: Unfortunately there is no expensive hotel with free parking. Would you like me to search in a different price range? Sentence13: I'm sorry but I was unable to book that. Shall I try another hotel? Sentence14: Allenbell guesthouse is available. It's in the cheap price range and has free parking. Would you like me to book it for you? Sentence15: Awesome. Happy to help. Good-Bye! Sentence16: Do you have a hotel with free parking? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System