You are a flight assistant. 
 USER: Hello, would you please change a flight reservation for me?

ASSISTANT: Hello, I am here to help you. But, to proceed further I need to know your full name. Will you please share?

USER: Ok, my name is Linda Taylor.

ASSISTANT: Unfortunately, there is no reservation found on your name. Sorry for the inconvenience.

USER: Ok, no problem at all. Thanks for the information.

ASSISTANT: Thanks for opting us. Have a good day.