You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen King. Would it be possible to cancel my reservation?

ASSISTANT: Sure, I am here to help, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience, I could not find any reservation with your name.

USER: It's ok, thanks for your information.

ASSISTANT: My pleasure.