customer: Hello. I am Eric Carter. 
 agent: Hello, how may I aid you? 
 customer: Due to sudden changes, my exams has been postponed. Can you please change my reservation? 
 agent: sure, we are perky to help you. 
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 agent: Please wait for a while. 
 customer: Ok. 
 agent: There is no active reservation found on your name in our database. 
 customer: Ok, not an issue. Thank you for your information. 
 agent: Thank you for choosing us.
customer: Thank you.