customer: Hi. 
 agent: Hello, how may I lend a hand to? 
 customer: I need to change my existing reservation as my trip got postponed, Can you please help me with that? 
 agent: Sure, I am here to help you for this. Could you please mention your name? 
 customer: Kevin Williams here. 
 agent: Please wait for a while, let me check your reservation status in our records. 
 customer: Sure. 
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 customer: Ok, no problem. Thanks for your information. 
 agent: Thank you very much for contacting our agency.
agent: Sorry for inconvenience, no reservation is found with your criteria.