You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am George Clark.

ASSISTANT: How can I aid you?

USER: I need to amend my reservation, can you help me out?

ASSISTANT: Sure, please allow me a moment to check for your status is active or not.

USER: Ok, make it fast.

ASSISTANT: Thank you for waiting. Sorry, there is no active reservation have been found under your name in our database to change it.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.