customer: Hello, I am Andrew Collins. 
 agent: Hello, how can I assist you? 
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 agent: Sure. Please wait for a moment. 
 customer: Sure. 
 agent: We did not found any reservation on your name. 
 customer: No problem, Thank you for your valuable information. 
 agent: Thanks for choosing us.
customer: I want to cancel my recent reservation due to postpone of my event at Seattle.