customer: Hello, I am George Roberts. 
 agent: Hello, how can I serve you? 
 customer: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me with it? 
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 customer: OK. 
 agent: Unfortunately there is no reservation found according to your name. 
 customer: No problem, thank you for the information. 
 agent: Thank you for availing us.
agent: Sure, please wait a while.