You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: David Wilson here.

ASSISTANT: How may I help you out?

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 in cancelling the ticket.

USER: Ok.

ASSISTANT: Happy to inform you, I have found the reservation. As per your request the reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for reaching us.