customer: Hello,. 
 agent: Hello. How may I help you today? 
 customer: Please change my existing reservation owing to an emergency. 
 agent: Sure, may I know your good name please? 
 customer: I am Samantha King. 
 agent: Ok, please wait for some time. 
 customer: Sure. 
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 customer: Thanks. 
 agent: Thank you for opting us.
agent: THere is no existing reservation found on your name in our data base.