customer: Hello. 
 agent: Hello, how can I abet you? 
 customer: Gregory Roberts this side. I want to change my existing reservation, due to some health issue. can you please help me? 
 agent: Sure, I will help you with that. Can you please wait while I check? 
 __ 
 agent: Sorry Gregory, there is no reservation on your name. 
 customer: It's ok, thank you for checking. 
 agent: Thank you for reaching us.
customer: Ok, take your time.