You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Kimberly Jones, want to alter my recent reservation due to some personal issue. Please help me out with that.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no active reservation found under your name in our records.

USER: It's ok, thank you.

ASSISTANT: Most welcome.