Hi, I am Joseph Clark.
user
Hello, how can you help you today?
assistant
I would like to change an existing reservation as my plan to meet my grand parents got postpone. Can you help me with this?
user
Sure, please wait a moment.
assistant
Sure.
user
Sorry to inform, no reservation found with your name.
assistant
Ok, not an issue. Thank you for your information.
user
Thanks for reaching us.
assistant