Hello, Anna Phillips here.
user
Hello, how may I support you today?
assistant
I want to change my existing reservation. Please help me with it.
user
Sure, please wait for a while, let me check your reservation and get back to you.
assistant
Ok.
user
Thank for your valuable time, sorry, unfortunately no reservation found with provided name.
assistant
Ok, not an issue. Thanks for your information.
user
Thanks for your interest, have a great day ahead.
assistant