You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Michael Adams.

ASSISTANT: Ok.

USER: Can you help me in changing my existing reservation as my plan to attend for flower festival got postponed?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

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

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry no reservation found on your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.