You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, I am here to aid you.

USER: Thank you.

ASSISTANT: Ok, May I know your good name?

USER: Kevin Thompson here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, There was no reservation found on your name in our database.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for availing us.