Hello.
user
Hello. How can I assist you?
assistant
I am planning to change an existing reservation, can you please help me out?
user
Can I know your name?
assistant
My name is Catherine Green.
user
Please wait.
assistant
Sure.
user
Sorry, no reservation found on your name to change.
assistant
That's fine, thank you for your service.
user
Thank you for reaching us.
assistant