You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Williams.

ASSISTANT: I am here to assist you?

USER: I want to cancel my ticket due to sudden demise of my cousin.

ASSISTANT: Ok, please let me know your reservation name. On which the ticket is reserved.

USER: It was reserved on 09/09.

ASSISTANT: Ok, there is no reservation been found on the name given. Sorry for the inconveniences. Thank you for choosing our agency.