Hello.
user
Hello.
assistant
I am Matthew Gonzalez.
user
 How can I aid you?
assistant
Owing to an emergency I had to requested for this change reservation. Can you please help me to change an existing reservation?
user
OK, please wait.
assistant
Sure.
user
Sorry, no reservation was found on your name.
assistant
Ok, not a problem. Thanks for your information.
user
 Thank you for availing us.
assistant