customer: Hello, I am Dennis Lopez. 
 agent: Hello, how can I render you? 
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 agent: Sure, I am ravish to help you. Please, wait for a minute. 
 customer: Ok. 
 agent: Thanks for waiting, there is no reservation found on your name. 
 customer: It's ok, thank you for your kind information. 
 agent: Thank you for approaching us.
customer: Will you please help me in changing my reservation as the seminar which I want to give got postponed?