customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I am Christopher Moore. I need to amend my reservation, can you help me out please? 
 __ 
 customer: Thank you. 
 agent: Sorry, there is no reservation found on your name to change. 
 customer: That's ok, no problem. Thank you for your information. 
 agent: Welcome, have a nice day.
agent: Sure, I will help you to change your reservation.