You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Susan Young and I need to change my existing reservation. Please, help me.

ASSISTANT: Sure. Let me check the status and revert you.

USER: Sure, take your time.

ASSISTANT: We did not find any reservation found on your name.

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

ASSISTANT: Thank you for approaching us.