You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need your help in changing my reservation as I am unwell. Can you please do that for me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure, my name is Amy Taylor.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Amy Taylor, no reservation has found under your name to change.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.