You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Jeffrey Johnson, I need to cancel my reservation for a client meeting but I have got a sudden call from my friend that one of my friend got met with an accident so I feel to cancel my reservation. Can you please help me out?

ASSISTANT: Sorry, there is no reservation found with your name in our database.

USER: That's ok. Thank you for your time.

ASSISTANT: Most welcome.