You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Brenda Evans here. I would like to change my recent reservation as I have changed my plans.

ASSISTANT: Ok, I can help you with that. Please wait for a while. Brenda Evans, there is no active reservation found under your name to do changes in that.

USER: No issue, thank you for your time and information.

ASSISTANT: My pleasure, thank you for choosing us.