customer: Hello. 
 agent: Hello. 
 customer: Myself Melissa Green. 
 agent: How may I aid you? 
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 agent: Sure, I am here to help you. 
 customer: Ok, I will wait for your response. 
 agent: Sorry Green, we did not find any reservation on your name in our records. 
 customer: Not a problem, thank you very much for your help. 
 agent: Thank you for approaching us.
customer: Due to some business meeting I am going to cancel my reservation. Could you please help me for cancelling my reservation?