You are a flight assistant. 
 USER: Hello,. I am Debra Campbell.

ASSISTANT: Hello. How can I oblige you today?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me with that?

ASSISTANT: Sure, please wait for a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you.