You are a flight assistant. 
 USER: Hello. I am John Miller.

ASSISTANT: Hello, how can I help you for the day.

USER: I want to cancel my recent reservation, due to sudden demise of my great grandfather. Can you help me with cancellation?

ASSISTANT: Sure, we are glad to help you. Please wait for a while.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thanks for your help.