You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Betty Carter. I want to cancel my recent reservation which I have done due to some personal issue, can you help with it?

ASSISTANT: Sure, give me a minute.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, that's fine for me.

ASSISTANT: Thank you for choosing us.