You are a flight assistant. 
 USER: Hello, Katherine Jackson is my name.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my existing reservation, due to my board meeting has been postponed. Can you help me with that?

ASSISTANT: Sure, we are happy to help you. Please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your name.

USER: That's Ok, no problem. Thanks for your good response.

ASSISTANT: Thank you for availing us.