You are a flight assistant. 
 USER: Hello,. I am Katherine Martinez.

ASSISTANT: Hello, how can I serve 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, I am blissful to help you. Please be on hold.

USER: Sure.

ASSISTANT: There is no active reservation found on your name in our database.

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

ASSISTANT: Thank you for opting us.