You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello. How may I help you?

USER: I am Justin Clark. 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: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found basis on your details.

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

ASSISTANT: Most welcome.