Hi.
user
Hello, what can I do for you today?
assistant
I need to change my existing reservation, Can you please help me with that?
user
Sure, please share your name to check further.
assistant
Katherine Johnson here.
user
Please wait.
assistant
Sure.
user
 Sorry, no reservation found on your given name in our database to change it.
assistant
Ok, no problem. Thanks for your information.
user
Thank you for contacting us.
assistant