You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: I am Patricia King. I just want to cancel my recent reservation, due to sudden demise of my Grand Father.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: We found a reservation in your name. Shall I proceed to cancellation?

USER: Ok,  proceed with cancellation.

ASSISTANT: Your reservation has been cancelled successfully.

USER: Thank you for cancelling my ticket.

ASSISTANT: Thank you.