customer: Hello. 
 agent: Hello, may I know your name please? 
 customer: My name is Jason Adams. 
 agent: How can I help you? 
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 agent: Please wait for a minute. 
 customer: Ok. 
 agent: Sorry, there is no reservation found by your name. 
 customer: No problem. 
 agent: Thank you and have a nice day. 
 customer: Thank you for checking.
customer: Owing to an emergency I want to change my reservation, can you help me?