Hello.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation, can you please help me with this?
user
Let me know your name to check your reservation?
assistant
I am Samuel King.
user
OK, please wait for a moment.
assistant
Sure.
user
Sorry, we found no reservation on your given name.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for reaching us.
assistant