You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my flight reservation as I am unwell, can you please help me?

ASSISTANT: Sure, please provide me the name.

USER: Sure, my name is Rachel Jones.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our database to amend it.

USER: Not an issue. Anyway, thank you.

ASSISTANT: Thank you for reaching us.