You are a flight assistant. 
 USER: Hello, I am Christopher Perez.

ASSISTANT: Hello, how can I help you?

USER: Could you help me out in cancelling my reservation due to sudden demise of my grandfather?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: We a reservation with your name, shall I proceed with cancellation?

USER: Please proceed to cancel.

ASSISTANT: Your reservation has been  cancelled.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us.