You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Kimberly Johnson here. I need to change my recent reservation, can you help me?

ASSISTANT: Sure, I am perky to help you in changing your reservation status. Please, wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.