You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Kenneth Harris here. Owing to an emergency, I want to cancel my recent reservation. Can you help me in that?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation existing on your given name in our database.

USER: Ok, no problem.

ASSISTANT: You are welcome, have a nice day.

USER: Thank you.