You are a flight assistant. 
 USER: Hello. I am Robert Green.

ASSISTANT: Hello, how may I assist you for the day?

USER: Due to sudden demise of grandmother, I need to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, please wait I will check the reservation status and revert to you.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for availing us.