You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I want to change my reservation as I am unwell. Could you please help me in changing my reservation?

ASSISTANT: I feel euphoric to help you about your flight ticket modification.

USER: Thank you.

ASSISTANT: Could you please provide your name to check the existing reservation status?

USER: My name is Ruth Taylor.

ASSISTANT: Sorry to say this Ruth, there are no active reservations under your name to change.

USER: That's fine, anyway thank you for checking.

ASSISTANT: Most welcome, thank you for choosing our service. Hope you have a nice day.