customer: Hello. Donald Clark here. 
 __ 
 customer: Due to health problem, I want to cancel my reservation. Can you please help me for that? 
 agent: Sure, wait for a minute. 
 customer: Ok. 
 agent: Sorry Clark, no reservation found on your name. 
 customer: Ok, thank you for the information. 
 agent: Thank you for contacting us.
agent: Hello, how may I help you?