customer: Hi. 
 agent: Hello, how may I be of your help? 
 customer: I just want to change an existing reservation due to my appointment with client got post pone. Can you help me? 
 agent: Sure, to proceed further may I know your good name please? 
 customer: I am Richard Miller. 
 agent: Ok, please wait a minute. 
 customer: Sure. 
 __ 
 customer: Ok, no issue. Thank you. 
 agent: Thank you for opting us and have a good day.
agent: Thank you for waiting. Unfortunately there is no reservation found by your name.