You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best I can provide assistance to you?

USER: I am Andrew Davis.

ASSISTANT: Ok.

USER: As my business meeting has been postponed, I need to change my reservation. Can you help me?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry Andrew Davis, there is no active reservation on your name to change it.

USER: No problem. Thank you.

ASSISTANT: Thanks for reaching us.