customer: Hi. I am Karen Walker. 
 agent: Hello, how can I be your helping hand today? 
 customer: Can you help me in cancelling my recent reservation, as my exam is postponed? 
 agent: Sure, we will help you. Please wait for a minute. 
 customer: Sure. 
 agent: Thanks for your time, no reservation was found on your name to cancel. 
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 agent: Thank you for reaching us. We hope to serve you again.
customer: That's ok, thank you.