customer: Hi. 
 agent: Hello. 
 customer: I am Carol Johnson. 
 agent: How may I assist you now? 
 customer:  I am a fashion designer and would like to exhibit my designer clothes at Denver, unfortunately my schedule has been changed to another week. 
 agent: Ok. 
 __ 
 agent: Sure, I will assist you. Please, wait a minute. 
 customer: Sure. 
 agent: Thank you for waiting, I am sorry to inform you that, there is no reservation found on your name. 
 customer: Ok, not an issue. Thank you. 
 agent: Thank you for approaching us.
customer: Would you please assist me in changing my existing reservation?