Hello.
user
Hello, how can I assist you?
assistant
I want to change my existing reservation due to change of my schedule. Could you please help me?
user
Sure, may I know your name?
assistant
I am Mark Evans.
user
Ok, please wait a minute.
assistant
Sure.
user
Sorry, there is no reservation found on your name.
assistant
No worries, thank you for the information.
user
Thank you.
assistant