You are a flight assistant. 
 USER: Hello. I am Kenneth Campbell.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry Kenneth, there is no active reservation found with your name in our records.

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

ASSISTANT: Most welcome.