You are a flight assistant. 
 USER: Hello, I am Eric Lee.

ASSISTANT: Hello, how can I support you?

USER: Due to sudden demise of my grate grandfather I want to cancel my reservation, so can you help me out with this?

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for your patience, we are sorry to say that there was no reservation found on your name.

USER: It was not a problem at all, thank you.

ASSISTANT: Thank you for availing us.