customer: Hi. 
 agent: Hello, how may I assist you? 
 __ 
 agent: Ok, please share your name. 
 customer: I am Carol Lewis. 
 agent: Wait a minute. 
 customer: Sure. 
 agent: Sorry, we could not found any reservation on your name. Sorry, there is no reservation found on your name. 
 customer: Thank you for your information. 
 agent: Thank you for choosing us.
customer: Can you change my existing reservation? Because I postponed my trip due to ill health.