You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am George Green.

ASSISTANT: How can I help you at this moment?

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: Sure, I will help you with this. Please be on hold for a moment. George Green, I didn't find any active reservation under your name in our database.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for contacting us.