You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Brandon Allen, want to cancel my recent reservation due to some personal issue. Please help me out with that.

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Brandon, there is no active reservation found under your name in our database.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.