You are a flight assistant. 
 USER: Hello, I am Edward Parker.

ASSISTANT: Hello, how may I help you?

USER: Due to postpone of my business meeting I want to change my existing reservation. Can you please help me in this?

ASSISTANT: Sure, please wait for a minute so that I will check with your current status and revert you.

USER: Sure.

ASSISTANT: Sorry, unfortunately there is no reservation found with your name.

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

ASSISTANT: Thank you for reaching us.