You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Carolyn Nelson. 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: Sure, please wait a while.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: It's ok, thank you for your help.

ASSISTANT: Welcome.