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