You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I have to change my travelling dates in my previous reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, I will help you with that.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name please?

USER: Ok, my name is Virginia Gonzalez.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: That's fine, not an issue.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Anyway's thank you for your information.