You are a flight assistant. 
 USER: Hello, I am Eric Evans.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my existing reservation on my name due some family issue. Please help me for that.

ASSISTANT: Sure, please hold on, let me check your reservation and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately no reservation found with provided name.

USER: Ok, not an issue. Thanks for your service.

ASSISTANT: Thanks for your interest, have a great day ahead.