Hello, my name is Margaret Taylor.
user
Hello, how may I assist you today?
assistant
I want to change my existing reservation due to postpone of my client meeting.
user
Sure, please wait for a while, I will check your reservation and get back to you.
assistant
Ok.
user
Sorry for inconvenience, there is no reservation found with your given name.
assistant
No problem, thank you for your service.
user
Thank you for reaching us.
assistant