You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you?

USER: I am Matthew King. Due to sudden demise of my grand father, I need to cancel my recent reservation. Will you help me with that?

ASSISTANT: Sure, please give me a moment to check your details and revert to you.

USER: Ok.

ASSISTANT: Sorry to inform you that no reservation exist on your name to cancel further.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.