You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to change my reservation because, I have changed my mind on my holiday location. Can I expect help from you?

ASSISTANT: Sure, I can help you with that. May I know your name to check for the previous reservation?

USER: My name is Samantha Roberts.

ASSISTANT: Please allow me a moment to check for the details. Samantha, I see that there is no reservation found under your name.

USER: Sure. That's sad to know. Anyway, thanks for checking.

ASSISTANT: Sorry for the inconvenience occured. Thank you for contacting us.

USER: You are welcome.