You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ronald Young.

ASSISTANT: How may I help you?

USER: I want to change my reservation as my get together program got postponed. Can you hep me?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

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

USER: Ok fine. Thanks for checking.

ASSISTANT: Most welcome.