Hi.
user
Hello, how may I help you today?
assistant
I want to change my existing reservation. Can you help me for that one?
user
Sure, may I know your good name please?
assistant
Sure, Margaret Miller here.
user
Please wait a minute.
assistant
Sure.
user
Sorry, there is no reservation found on your name to change.
assistant
No issues, thank you for the information.
user
Thank you for choosing us.
assistant