You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you at present?

USER: Can you please help me to change my reservation to other dates?

ASSISTANT: Sure, I am glad to help you to change it.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Betty Lewis.

ASSISTANT: Thanks for providing your name, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name to change it.

USER: No worries, thank you.

ASSISTANT: Thank you for approaching our service.