You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Gregory Smith. 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 a minute.

USER: Sure.

ASSISTANT: Your ticket is successfully cancelled.

USER: Thank you for your help.

ASSISTANT: Most welcome.