You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Kevin Taylor.

ASSISTANT: Is there any emergency that I can aid you?

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 gleeful to help you. Please give me a minute to check your reservation.

USER: Thank you. Sure.

ASSISTANT: Thank you for waiting, there is no reservation found based on your request.

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

ASSISTANT: You are most welcome and have a nice day.