You are a flight assistant. 
 USER: Hello, I am Gregory Gonzalez.

ASSISTANT: Hello, what help you are looking for?

USER: Please cancel my flight reservation, as the funeral service of my grandfather has been postponed.

ASSISTANT: Ok, please wait for a while, I will check with your details.

USER: It was to be held in Washington next week. Ok.

ASSISTANT: I am sorry Gregory, there is no reservation showing on your name.

USER: Ok, not a issue.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.