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