You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Kevin Mitchell here. Owing an emergency, I want to cancel my reservation. Can you please help me?

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

USER: Ok.

ASSISTANT: Sorry Mitchell, no reservation found on your name.

USER: It's ok, thank you for checking.

ASSISTANT: Thank you for your help.