customer: Hi. 
 agent: Hello, how may  I support you today? 
 customer: I am Andrew Lee. I want to change my existing reservation, due to my exams dates has been changed. Can you help me out? 
 __ 
 customer: Thank you. 
 agent: Please hold a moment. 
 customer: Sure. 
 agent: Thanks for your time, sorry, no reservation found with you name. 
 customer: Not an issue. Thank you for your information. 
 agent: Thank you for approaching us, have a great day ahead.
agent: Sure, we are glad to serve you.