You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to amend my reservation dates. Can you please help me in this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name, please?

USER: Myself Kenneth Campbell.

ASSISTANT: Hold on a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, I did not find any reservation on your name to modify your dates.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for approaching us.