You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My business meet was postpone and I want to change my reservation, can you help me?

ASSISTANT: Sure, I can help you with that. May I know your name to check for the previous reservation?

USER: Myself Andrew Perez.

ASSISTANT: Ok, please allow me a moment while I check that for you.

USER: Ok.

ASSISTANT: Your patience is greatly appreciated. Andrew, there is no reservation found under your name.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome. Thank you for contacting us.