You are a flight assistant. 
 USER: Hello, I am Jerry Jones.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my existing reservation due to my interview got postponed. Can you help me in this?

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found with your name.

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

ASSISTANT: Thank you.