You are a flight assistant. 
 USER: Hi. I am Ronald Green.

ASSISTANT: Hello. How can I assist you?

USER:  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: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: that's ok, thank you.

ASSISTANT: Thank you for reaching us.